These are the updated answers to Wordbrain Ghost Level as of January 2019.
Wordbrain Ghost Level 1 – nuclear, teenager, ultimate, surface, airport, carrot, period, physical, pyramid
Wordbrain Ghost Level 2 – recent, hardly, unknown, single, prayer, research, throat, narrow, woodpile, solar
Wordbrain Ghost Level 3 – ticket, ceremony, expect, vacation, cotton, legend, mostly, United, particularly
Wordbrain Ghost Level 4 – consider, chairman, singer, please, cinema, unlike, filter, channel, composition
Wordbrain Ghost Level 5 – freedom, enable, slightly, relation, profit, landlord, kitten, scooter, observer
Wordbrain Ghost Level 6 – civilian, charge, measure, observe, writing, fishing, unusual, security, quarter
Wordbrain Ghost Level 7 – acquire, peasant, utility, regional, exceed, control, should, business, position
Wordbrain Ghost Level 8 – ancient, insist, forest, service, frequent, locate, decline, reason, investigate
Wordbrain Ghost Level 9 – general, copper, change, starfish, protein, mountain, better, culture, spokesman

Wordbrain Ghost Level 10 – describe, winter, shower, divide, stilts, grapes, edition, player, question, ready
Wordbrain Ghost Level 11 – testify, cherry, famous, figure, numerous, itself, anywhere, exposure, accompany
Wordbrain Ghost Level 12 – center, project, correct, inform, soldier, lifetime, exactly, vertical, particle
Wordbrain Ghost Level 13 – instead, around, nobody, realize, familiar, training, proposed, mother, property
Wordbrain Ghost Level 14 – radical, paddle, beneath, whisper, foreign, creditor, receipt, quietly, bathroom
Wordbrain Ghost Level 15 – earring, brother, supposed, emperor, policy, educator, emphasis, somewhat, smile
Wordbrain Ghost Level 16 – religion, editor, moreover, capable, shield, facility, petrol, deserve, resident
Wordbrain Ghost Level 17 – corridor, chapter, properly, worker, consume, annual, flower, adviser, reduction
Wordbrain Ghost Level 18 – fortune, variable, prevent, however, closely, nowhere, borrow, leather, princess
Wordbrain Ghost Level 19 – sentence, organic, continue, senior, stripe, derive, murder, future, instruction
Wordbrain Ghost Level 20 – interval, treasury, script, imagine, afford, magnet, district, perhaps, response

Here are the answers to Ghost Level Pack.
Wordbrain Ghost 1(DRCLREAU)
Hints – First Word first letter starting with N Ending with R (7 Letter Word).
Second Word First letter Starting with T Ending with R (8 Letter Word).
Third Word First letter starting with U Ending with E (8 Letter Word).
Fourth Word First letter starting with S Ending with E (7 Letter Word).
Fifth Word First letter starting with A Ending with T (7 Letter Word).
Sixth Word First letter starting with C Ending with T (6 Letter Word).
Seventh Word First letter starting with P Ending with D (6 Letter Word).
Eighth Word First letter starting with P Ending with D (7 Letter Word).
Nineth Word First letter starting with P Ending with L (8 Letter Word).
Wordbrain Ghost 2(NETARWHK)
Hints – First Word first letter starting with R Ending with T (6 Letter Word).
Second Word First letter Starting with H Ending with Y (6 Letter Word).
Third Word First letter starting with U Ending with N (7 Letter Word).
Fourth Word First letter starting with S Ending with E (6 Letter Word).
Fifth Word First letter starting with P Ending with R (6 Letter Word).
Sixth Word First letter starting with R Ending with H (8 Letter Word).
Seventh Word First letter starting with T Ending with T (6 Letter Word).
Eighth Word First letter starting with N Ending with W (6 Letter Word).
Nineth Word First letter starting with W Ending with E (8 Letter Word).
Tenth Word First letter starting with S Ending with R (5 Letter Word).
Wordbrain Ghost 3(EPELCYLT)
Hints – First Word first letter starting with T Ending with T (6 Letter Word).
Second Word First letter Starting with C Ending with Y (8 Letter Word).
Third Word First letter starting with E Ending with T (6 Letter Word).
Fourth Word First letter starting with V Ending with N (8 Letter Word).
Fifth Word First letter starting with C Ending with N (6 Letter Word).
Sixth Word First letter starting with L Ending with D (6 Letter Word).
Seventh Word First letter starting with M Ending with Y (6 Letter Word).
Eighth Word First letter starting with U Ending with D (6 Letter Word).
Nineth Word First letter starting with P Ending with Y (12 Letter Word).
Wordbrain Ghost 4(FCOICEMN)
Hints – First Word first letter starting with C Ending with R (8 Letter Word).
Second Word First letter Starting with C Ending with N (8 Letter Word).
Third Word First letter starting with S Ending with R (6 Letter Word).
Fourth Word First letter starting with P Ending with E (6 Letter Word).
Fifth Word First letter starting with C Ending with A (6 Letter Word).
Sixth Word First letter starting with U Ending with E (6 Letter Word).
Seventh Word First letter starting with F Ending with R (6 Letter Word).
Eighth Word First letter starting with C Ending with L (7 Letter Word).
Nineth Word First letter starting with C Ending with N (11 Letter Word).
Wordbrain Ghost 5(OARRREEK)
Hints – First Word first letter starting with F Ending with M (7 Letter Word).
Second Word First letter Starting with E Ending with E (6 Letter Word).
Third Word First letter starting with S Ending with Y (8 Letter Word).
Fourth Word First letter starting with R Ending with N (8 Letter Word).
Fifth Word First letter starting with P Ending with T (6 Letter Word).
Sixth Word First letter starting with L Ending with D (8 Letter Word).
Seventh Word First letter starting with K Ending with N (6 Letter Word).
Eighth Word First letter starting with S Ending with R (7 Letter Word).
Nineth Word First letter starting with O Ending with R (8 Letter Word).
Wordbrain Ghost 6(YETENETQ)
Hints – First Word first letter starting with C Ending with N (8 Letter Word).
Second Word First letter Starting with C Ending with E (6 Letter Word).
Third Word First letter starting with M Ending with E (7 Letter Word).
Fourth Word First letter starting with O Ending with E (7 Letter Word).
Fifth Word First letter starting with W Ending with G (7 Letter Word).
Sixth Word First letter starting with F Ending with G (7 Letter Word).
Seventh Word First letter starting with U Ending with L (7 Letter Word).
Eighth Word First letter starting with S Ending with Y (8 Letter Word).
Nineth Word First letter starting with Q Ending with R (7 Letter Word).
Wordbrain Ghost 7(SLSSELEN)
Hints – First Word first letter starting with A Ending with E (7 Letter Word).
Second Word First letter Starting with P Ending with N (8 Letter Word).
Third Word First letter starting with P Ending with T (7 Letter Word).
Fourth Word First letter starting with U Ending with Y (7 Letter Word).
Fifth Word First letter starting with R Ending with L (8 Letter Word).
Sixth Word First letter starting with E Ending with D (6 Letter Word).
Seventh Word First letter starting with C Ending with L (7 Letter Word).
Eighth Word First letter starting with S Ending with D (6 Letter Word).
Nineth Word First letter starting with B Ending with S (8 Letter Word).
Wordbrain Ghost 8(EETRTENE)
Hints – First Word first letter starting with A Ending with T (7 Letter Word).
Second Word First letter Starting with I Ending with T (6 Letter Word).
Third Word First letter starting with F Ending with T (6 Letter Word).
Fourth Word First letter starting with L Ending with E (6 Letter Word).
Fifth Word First letter starting with F Ending with T (8 Letter Word).
Sixth Word First letter starting with D Ending with E (7 Letter Word).
Seventh Word First letter starting with S Ending with E (7 Letter Word).
Eighth Word First letter starting with R Ending with N (6 Letter Word).
Nineth Word First letter starting with I Ending with E (11 Letter Word).
Wordbrain Ghost 9(RUNESILS)
Hints – First Word first letter starting with G Ending with L (7 Letter Word).
Second Word First letter Starting with C Ending with R (6 Letter Word).
Third Word First letter starting with C Ending with E (6 Letter Word).
Fourth Word First letter starting with S Ending with H (8 Letter Word).
Fifth Word First letter starting with P Ending with N (7 Letter Word).
Sixth Word First letter starting with M Ending with N (8 Letter Word).
Seventh Word First letter starting with B Ending with R (6 Letter Word).
Eighth Word First letter starting with C Ending with E (7 Letter Word).
Nineth Word First letter starting with S Ending with N (9 Letter Word).
Wordbrain Ghost 10(YNTSSRNP)
Hints – First Word first letter starting with D Ending with E (8 Letter Word).
Second Word First letter Starting with W Ending with R (6 Letter Word).
Third Word First letter starting with S Ending with R (6 Letter Word).
Fourth Word First letter starting with D Ending with E (6 Letter Word).
Fifth Word First letter starting with S Ending with S (6 Letter Word).
Sixth Word First letter starting with G Ending with S (6 Letter Word).
Seventh Word First letter starting with Q Ending with N (8 Letter Word).
Eighth Word First letter starting with R Ending with Y (5 Letter Word).
Nineth Word First letter starting with E Ending with N (7 Letter Word).
Tenth Word First letter starting with P Ending with R (6 Letter Word).
Wordbrain Ghost 11(ECYULPUS)
Hints – First Word first letter starting with T Ending with Y (7 Letter Word).
Second Word First letter Starting with C Ending with Y (6 Letter Word).
Third Word First letter starting with F Ending with S (6 Letter Word).
Fourth Word First letter starting with F Ending with E (6 Letter Word).
Fifth Word First letter starting with N Ending with S (8 Letter Word).
Sixth Word First letter starting with I Ending with F (6 Letter Word).
Seventh Word First letter starting with A Ending with E (8 Letter Word).
Eighth Word First letter starting with E Ending with E (8 Letter Word).
Nineth Word First letter starting with A Ending with Y (9 Letter Word).
Wordbrain Ghost 12(SONELLYT)
Hints – First Word first letter starting with C Ending with R (6 Letter Word).
Second Word First letter Starting with C Ending with T (7 Letter Word).
Third Word First letter starting with P Ending with T (7 Letter Word).
Fourth Word First letter starting with I Ending with M (6 Letter Word).
Fifth Word First letter starting with S Ending with R (7 Letter Word).
Sixth Word First letter starting with L Ending with E (8 Letter Word).
Seventh Word First letter starting with E Ending with Y (7 Letter Word).
Eighth Word First letter starting with V Ending with L (8 Letter Word).
Nineth Word First letter starting with P Ending with E (8 Letter Word).
Wordbrain Ghost 13(FYPYTDGN)
Hints – First Word first letter starting with I Ending with D (7 Letter Word).
Second Word First letter Starting with A Ending with D (6 Letter Word).
Third Word First letter starting with N Ending with Y (6 Letter Word).
Fourth Word First letter starting with R Ending with E (7 Letter Word).
Fifth Word First letter starting with F Ending with R (8 Letter Word).
Sixth Word First letter starting with T Ending with G (8 Letter Word).
Seventh Word First letter starting with P Ending with D (8 Letter Word).
Eighth Word First letter starting with M Ending with R (6 Letter Word).
Nineth Word First letter starting with P Ending with Y (8 Letter Word).
Wordbrain Ghost 14(TPINMBEL)
Hints – First Word first letter starting with R Ending with L (7 Letter Word).
Second Word First letter Starting with P Ending with E (6 Letter Word).
Third Word First letter starting with B Ending with H (7 Letter Word).
Fourth Word First letter starting with W Ending with R (7 Letter Word).
Fifth Word First letter starting with F Ending with N (7 Letter Word).
Sixth Word First letter starting with C Ending with R (8 Letter Word).
Seventh Word First letter starting with R Ending with T (7 Letter Word).
Eighth Word First letter starting with Q Ending with Y (7 Letter Word).
Nineth Word First letter starting with B Ending with M (8 Letter Word).
Wordbrain Ghost 15(ROSELIRS)
Hints – First Word first letter starting with E Ending with G (7 Letter Word).
Second Word First letter Starting with B Ending with R (7 Letter Word).
Third Word First letter starting with S Ending with D (8 Letter Word).
Fourth Word First letter starting with E Ending with R (7 Letter Word).
Fifth Word First letter starting with P Ending with Y (6 Letter Word).
Sixth Word First letter starting with E Ending with R (8 Letter Word).
Seventh Word First letter starting with E Ending with S (8 Letter Word).
Eighth Word First letter starting with S Ending with T (8 Letter Word).
Nineth Word First letter starting with S Ending with E (5 Letter Word).
Wordbrain Ghost 16(TEREDLRR)
Hints – First Word first letter starting with R Ending with N (8 Letter Word).
Second Word First letter Starting with E Ending with R (6 Letter Word).
Third Word First letter starting with M Ending with R (8 Letter Word).
Fourth Word First letter starting with C Ending with E (7 Letter Word).
Fifth Word First letter starting with R Ending with T (8 Letter Word).
Sixth Word First letter starting with S Ending with D (6 Letter Word).
Seventh Word First letter starting with F Ending with Y (8 Letter Word).
Eighth Word First letter starting with P Ending with L (6 Letter Word).
Nineth Word First letter starting with D Ending with E (7 Letter Word).
Wordbrain Ghost 17(RHRNRUDR)
Hints – First Word first letter starting with C Ending with R (8 Letter Word).
Second Word First letter Starting with C Ending with R (7 Letter Word).
Third Word First letter starting with P Ending with Y (8 Letter Word).
Fourth Word First letter starting with W Ending with R (6 Letter Word).
Fifth Word First letter starting with C Ending with E (7 Letter Word).
Sixth Word First letter starting with A Ending with L (6 Letter Word).
Seventh Word First letter starting with F Ending with R (6 Letter Word).
Eighth Word First letter starting with A Ending with R (7 Letter Word).
Nineth Word First letter starting with R Ending with N (9 Letter Word).
Wordbrain Ghost 18(BVWOLYSS)
Hints – First Word first letter starting with F Ending with E (7 Letter Word).
Second Word First letter Starting with V Ending with E (8 Letter Word).
Third Word First letter starting with P Ending with T (7 Letter Word).
Fourth Word First letter starting with H Ending with R (7 Letter Word).
Fifth Word First letter starting with C Ending with Y (7 Letter Word).
Sixth Word First letter starting with N Ending with E (7 Letter Word).
Seventh Word First letter starting with B Ending with W (6 Letter Word).
Eighth Word First letter starting with L Ending with R (7 Letter Word).
Nineth Word First letter starting with P Ending with S (8 Letter Word).
Wordbrain Ghost 19(UEDFURNS)
Hints – First Word first letter starting with S Ending with E (8 Letter Word).
Second Word First letter Starting with O Ending with C (7 Letter Word).
Third Word First letter starting with C Ending with E (8 Letter Word).
Fourth Word First letter starting with S Ending with R (6 Letter Word).
Fifth Word First letter starting with S Ending with E (6 Letter Word).
Sixth Word First letter starting with D Ending with E (6 Letter Word).
Seventh Word First letter starting with M Ending with R (6 Letter Word).
Eighth Word First letter starting with F Ending with E (6 Letter Word).
Nineth Word First letter starting with I Ending with N (11 Letter Word).
Wordbrain Ghost 20(NSPRSGIL)
Hints – First Word first letter starting with I Ending with L (8 Letter Word).
Second Word First letter Starting with T Ending with Y (8 Letter Word).
Third Word First letter starting with S Ending with T (6 Letter Word).
Fourth Word First letter starting with I Ending with E (7 Letter Word).
Fifth Word First letter starting with A Ending with D (6 Letter Word).
Sixth Word First letter starting with M Ending with T (6 Letter Word).
Seventh Word First letter starting with D Ending with T (8 Letter Word).
Eighth Word First letter starting with P Ending with S (7 Letter Word).
Nineth Word First letter starting with R Ending with E (8 Letter Word).
You can find the video walkthrough for Wordbrain Ghost level 1 to 20 here

Go back to Wordbrain Answers for other levels.