These are the updated answers to Wordbrain Yeti Level as of January 2019.
Wordbrain Yeti Level – 1 – Ministry, Protest, Modest, Receipt, Beside, Tragedy, Deliver, Reality, Scientist
Wordbrain Yeti Level – 2 – Toward, Computer, Consumer, Remind, Valuable, Loyalty, Wealthy, Minority, Toilet
Wordbrain Yeti Level – 3 – Helpful, Religion, Regulate, Chapter, Detailed, Champion, Dinner, Construction
Wordbrain Yeti Level – 4 – Profit, Growing, Compose, Activist, Oppose, Window, Behavior, Carriage, Movement
Wordbrain Yeti Level – 5 – Butter, Arrival, Average, Examine, Shopping, Criminal, Downtown, Handful, Gifted
Wordbrain Yeti Level – 6 – Vacation, Spread, Visible, Formal, Scandal, Interval, Remember, Ultimate, Orange
Wordbrain Yeti Level – 7 – Apparent, Against, Research, Confirm, Leading, Refugee, Consider, Intelligence
Wordbrain Yeti Level – 8 – Affect, Collapse, Threat, Teacher, Reflect, Sustain, Differ, Bedroom, Employment
Wordbrain Yeti Level – 9 – Injury, Graduate, Multiple, Operate, Together, Stimulus, Treasury, Consumption
Wordbrain Yeti Level – 10 – Signal, Entrance, Tendency, Predict, Prospect, Careful, Ambition, Independence
Wordbrain Yeti Level – 11 – Pavement, Besides, Particle, Announce, Breast, Result, Courage, Delight, Veteran
Wordbrain Yeti Level – 12 – Economic, Curtain, Square, Castle, Player, Mistake, Entirely, Universe, Cultural
Wordbrain Yeti Level – 13 – Search, Empire, Athlete, Review, Finger, Slightly, Various, Collect, Observation
Wordbrain Yeti Level – 14 – Palace, Region, Mortgage, Asleep, Please, Property, Alliance, Process, Difficult
Wordbrain Yeti Level – 15 – Prevent, Itself, Daughter, Possible, Concern, Confront, Likely, Shadow, Although
Wordbrain Yeti Level – 16 – Distant, Olympic, Symbol, Import, Function, Overall, Literary, Thanks, Naturally
Wordbrain Yeti Level – 17 – Sequence, Symbolic, Homeless, Testing, Setting, Observer, Instinct, Percentage
Wordbrain Yeti Level – 18 – Attack, Provider, Protein, Estimate, Appendix, Desire, Disaster, Utility, Avenue
Wordbrain Yeti Level – 19 – Museum, Overcome, Mixture, Leader, Memory, Medicine, Company, Producer, Physical
Wordbrain Yeti Level – 20 – Jacket, Largely, Propose, Scheme, Standing, Document, Deposit, Artistic, Passion

Here are the answers to Yeti Level Pack.

Wordbrain Yeti 1(YTTRICES)
Hints – First Word first letter starting with P Ending with T (7 Letter Word).
Second Word First letter Starting with M Ending with T (6 Letter Word).
Third Word First letter starting with M Ending with Y (8 Letter Word).
Fourth Word First letter starting with R Ending with T (7 Letter Word).
Fifth Word First letter starting with B Ending with E (6 Letter Word).
Sixth Word First letter starting with T Ending with Y (7 Letter Word).
Seventh Word First letter starting with D Ending with R (7 Letter Word).
Eighth Word First letter starting with R Ending with Y (7 Letter Word).
Nineth Word First letter starting with S Ending with T (9 Letter Word).
Wordbrain Yeti 2(CTYMTDEE)
Hints – First Word first letter starting with C Ending with R (8 Letter Word).
Second Word First letter Starting with T Ending with D (6 Letter Word).
Third Word First letter starting with C Ending with R (8 Letter Word).
Fourth Word First letter starting with R Ending with D (6 Letter Word).
Fifth Word First letter starting with V Ending with E (8 Letter Word).
Sixth Word First letter starting with L Ending with Y (7 Letter Word).
Seventh Word First letter starting with W Ending with Y (7 Letter Word).
Eighth Word First letter starting with M Ending with Y (8 Letter Word).
Nineth Word First letter starting with T Ending with T (6 Letter Word).
Wordbrain Yeti 3(NCRNPEEN)
Hints – First Word first letter starting with R Ending with N (8 Letter Word).
Second Word First letter Starting with H Ending with L (7 Letter Word).
Third Word First letter starting with R Ending with E (8 Letter Word).
Fourth Word First letter starting with C Ending with R (7 Letter Word).
Fifth Word First letter starting with D Ending with D (8 Letter Word).
Sixth Word First letter starting with C Ending with N (8 Letter Word).
Seventh Word First letter starting with D Ending with R (6 Letter Word).
Eighth Word First letter starting with C Ending with N (12 Letter Word).
Wordbrain Yeti 4(TGRIRCSE)
Hints – First Word first letter starting with M Ending with T (8 Letter Word).
Second Word First letter Starting with P Ending with T (6 Letter Word).
Third Word First letter starting with G Ending with G (7 Letter Word).
Fourth Word First letter starting with C Ending with E (7 Letter Word).
Fifth Word First letter starting with A Ending with T (8 Letter Word).
Sixth Word First letter starting with O Ending with E (6 Letter Word).
Seventh Word First letter starting with W Ending with W (6 Letter Word).
Eighth Word First letter starting with B Ending with R (8 Letter Word).
Nineth Word First letter starting with C Ending with E (8 Letter Word).
Wordbrain Yeti 5(DGIGRMFL)
Hints – First Word first letter starting with B Ending with R (6 Letter Word).
Second Word First letter Starting with A Ending with L (7 Letter Word).
Third Word First letter starting with A Ending with E (7 Letter Word).
Fourth Word First letter starting with E Ending with E (7 Letter Word).
Fifth Word First letter starting with C Ending with L (8 Letter Word).
Sixth Word First letter starting with H Ending with L (7 Letter Word).
Seventh Word First letter starting with S Ending with G (8 Letter Word).
Eighth Word First letter starting with D Ending with N (8 Letter Word).
Nineth Word First letter starting with G Ending with D (6 Letter Word).
Wordbrain Yeti 6(NSAOANGN)
Hints – First Word first letter starting with F Ending with L (6 Letter Word).
Second Word First letter Starting with S Ending with L (7 Letter Word).
Third Word First letter starting with I Ending with L (8 Letter Word).
Fourth Word First letter starting with V Ending with N (8 Letter Word).
Fifth Word First letter starting with S Ending with D (6 Letter Word).
Sixth Word First letter starting with V Ending with E (7 Letter Word).
Seventh Word First letter starting with R Ending with R (8 Letter Word).
Eighth Word First letter starting with U Ending with E (8 Letter Word).
Nineth Word First letter starting with O Ending with E (6 Letter Word).
Wordbrain Yeti 7(EEEEILGI)
Hints – First Word first letter starting with A Ending with T (7 Letter Word).
Second Word First letter Starting with A Ending with T (8 Letter Word).
Third Word First letter starting with C Ending with M (7 Letter Word).
Fourth Word First letter starting with R Ending with H (8 Letter Word).
Fifth Word First letter starting with L Ending with G (7 Letter Word).
Sixth Word First letter starting with R Ending with E (7 Letter Word).
Seventh Word First letter starting with C Ending with R (8 Letter Word).
Eighth Word First letter starting with I Ending with E (12 Letter Word).
Wordbrain Yeti 8(RTMTRIAE)
Hints – First Word first letter starting with C Ending with E (8 Letter Word).
Second Word First letter Starting with A Ending with T (6 Letter Word).
Third Word First letter starting with T Ending with T (6 Letter Word).
Fourth Word First letter starting with T Ending with R (7 Letter Word).
Fifth Word First letter starting with R Ending with T (7 Letter Word).
Sixth Word First letter starting with S Ending with N (7 Letter Word).
Seventh Word First letter starting with D Ending with R (6 Letter Word).
Eighth Word First letter starting with B Ending with M (7 Letter Word).
Nineth Word First letter starting with E Ending with T (10 Letter Word).
Wordbrain Yeti 9(ELNRYETS)
Hints – First Word first letter starting with G Ending with E (8 Letter Word).
Second Word First letter Starting with M Ending with E (8 Letter Word).
Third Word First letter starting with I Ending with Y (6 Letter Word).
Fourth Word First letter starting with S Ending with S (8 Letter Word).
Fifth Word First letter starting with O Ending with E (7 Letter Word).
Sixth Word First letter starting with T Ending with R (8 Letter Word).
Seventh Word First letter starting with T Ending with Y (8 Letter Word).
Eighth Word First letter starting with C Ending with N (11 Letter Word).
Wordbrain Yeti 10(LTTNNEEN)
Hints – First Word first letter starting with E Ending with E (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 L (6 Letter Word).
Fourth Word First letter starting with P Ending with T (7 Letter Word).
Fifth Word First letter starting with P Ending with T (8 Letter Word).
Sixth Word First letter starting with C Ending with L (7 Letter Word).
Seventh Word First letter starting with A Ending with N (8 Letter Word).
Eighth Word First letter starting with I Ending with E (12 Letter Word).
Wordbrain Yeti 11(DSETGEES)
Hints – First Word first letter starting with P Ending with T (8 Letter Word).
Second Word First letter Starting with B Ending with S (7 Letter Word).
Third Word First letter starting with P Ending with E (8 Letter Word).
Fourth Word First letter starting with A Ending with E (8 Letter Word).
Fifth Word First letter starting with B Ending with T (6 Letter Word).
Sixth Word First letter starting with R Ending with T (6 Letter Word).
Seventh Word First letter starting with C Ending with E (7 Letter Word).
Eighth Word First letter starting with D Ending with T (7 Letter Word).
Nineth Word First letter starting with V Ending with N (7 Letter Word).
Wordbrain Yeti 12(CEYNCTNE)
Hints – First Word first letter starting with E Ending with C (8 Letter Word).
Second Word First letter Starting with C Ending with N (7 Letter Word).
Third Word First letter starting with S Ending with E (6 Letter Word).
Fourth Word First letter starting with M Ending with E (7 Letter Word).
Fifth Word First letter starting with E Ending with Y (8 Letter Word).
Sixth Word First letter starting with C Ending with E (6 Letter Word).
Seventh Word First letter starting with P Ending with R (6 Letter Word).
Eighth Word First letter starting with U Ending with E (8 Letter Word).
Nineth Word First letter starting with C Ending with L (8 Letter Word).
Wordbrain Yeti 13(AHRVANBO)
Hints – First Word first letter starting with S Ending with H (6 Letter Word).
Second Word First letter Starting with R Ending with W (6 Letter Word).
Third Word First letter starting with E Ending with E (6 Letter Word).
Fourth Word First letter starting with A Ending with E (7 Letter Word).
Fifth Word First letter starting with F Ending with R (6 Letter Word).
Sixth Word First letter starting with S Ending with Y (8 Letter Word).
Seventh Word First letter starting with V Ending with S (7 Letter Word).
Eighth Word First letter starting with C Ending with T (7 Letter Word).
Nineth Word First letter starting with O Ending with N (11 Letter Word).
Wordbrain Yeti 14(TFECSANA)
Hints – First Word first letter starting with R Ending with N (6 Letter Word).
Second Word First letter Starting with M Ending with E (8 Letter Word).
Third Word First letter starting with P Ending with E (6 Letter Word).
Fourth Word First letter starting with A Ending with P (6 Letter Word).
Fifth Word First letter starting with P Ending with E (6 Letter Word).
Sixth Word First letter starting with P Ending with Y (8 Letter Word).
Seventh Word First letter starting with A Ending with E (8 Letter Word).
Eighth Word First letter starting with P Ending with S (7 Letter Word).
Nineth Word First letter starting with D Ending with T (9 Letter Word).
Wordbrain Yeti 15(ERNTAGLI)
Hints – First Word first letter starting with D Ending with R (8 Letter Word).
Second Word First letter Starting with P Ending with E (8 Letter Word).
Third Word First letter starting with C Ending with N (7 Letter Word).
Fourth Word First letter starting with C Ending with T (8 Letter Word).
Fifth Word First letter starting with P Ending with T (7 Letter Word).
Sixth Word First letter starting with I Ending with F (6 Letter Word).
Seventh Word First letter starting with L Ending with Y (6 Letter Word).
Eighth Word First letter starting with S Ending with W (6 Letter Word).
Nineth Word First letter starting with A Ending with H (8 Letter Word).
Wordbrain Yeti 16(NLTLYALT)
Hints – First Word first letter starting with D Ending with T (7 Letter Word).
Second Word First letter Starting with O Ending with C (7 Letter Word).
Third Word First letter starting with S Ending with L (6 Letter Word).
Fourth Word First letter starting with I Ending with T (6 Letter Word).
Fifth Word First letter starting with O Ending with L (7 Letter Word).
Sixth Word First letter starting with L Ending with Y (8 Letter Word).
Seventh Word First letter starting with T Ending with S (6 Letter Word).
Eighth Word First letter starting with N Ending with Y (9 Letter Word).
Nineth Word First letter starting with F Ending with N (8 Letter Word).
Wordbrain Yeti 17(ECERTEGT)
Hints – First Word first letter starting with T Ending with G (7 Letter Word).
Second Word First letter Starting with S Ending with G (7 Letter Word).
Third Word First letter starting with S Ending with E (8 Letter Word).
Fourth Word First letter starting with S Ending with C (8 Letter Word).
Fifth Word First letter starting with H Ending with S (8 Letter Word).
Sixth Word First letter starting with O Ending with R (8 Letter Word).
Seventh Word First letter starting with I Ending with T (8 Letter Word).
Eighth Word First letter starting with P Ending with E (10 Letter Word).
Wordbrain Yeti 18(AEERENTE)
Hints – First Word first letter starting with P Ending with R (8 Letter Word).
Second Word First letter Starting with A Ending with K (6 Letter Word).
Third Word First letter starting with A Ending with X (8 Letter Word).
Fourth Word First letter starting with P Ending with N (7 Letter Word).
Fifth Word First letter starting with E Ending with E (8 Letter Word).
Sixth Word First letter starting with D Ending with R (8 Letter Word).
Seventh Word First letter starting with D Ending with E (6 Letter Word).
Eighth Word First letter starting with U Ending with Y (7 Letter Word).
Nineth Word First letter starting with A Ending with E (6 Letter Word).
Wordbrain Yeti 19(ROPRMEYL)
Hints – First Word first letter starting with M Ending with M (6 Letter Word).
Second Word First letter Starting with O Ending with E (8 Letter Word).
Third Word First letter starting with M Ending with E (7 Letter Word).
Fourth Word First letter starting with L Ending with R (6 Letter Word).
Fifth Word First letter starting with M Ending with Y (6 Letter Word).
Sixth Word First letter starting with M Ending with E (8 Letter Word).
Seventh Word First letter starting with C Ending with Y (7 Letter Word).
Eighth Word First letter starting with P Ending with R (8 Letter Word).
Nineth Word First letter starting with P Ending with L (8 Letter Word).
Wordbrain Yeti 20(ATNTSEGM)
Hints – First Word first letter starting with J Ending with T (6 Letter Word).
Second Word First letter Starting with L Ending with Y (7 Letter Word).
Third Word First letter starting with P Ending with E (7 Letter Word).
Fourth Word First letter starting with S Ending with E (6 Letter Word).
Fifth Word First letter starting with S Ending with G (8 Letter Word).
Sixth Word First letter starting with D Ending with T (8 Letter Word).
Seventh Word First letter starting with D Ending with T (7 Letter Word).
Eighth Word First letter starting with A Ending with C (8 Letter Word).
Nineth Word First letter starting with P Ending with N (7 Letter Word).
You can find the video walkthrough for Wordbrain Yeti level 1 to 20 here

The solutions to the puzzles were last updated on April 5, 2019