Sometimes they repeat the words these are the ones I have found:

intense
abnormal
conflict
guarante
magnatude
nuclear
pollution
anonymous
random
formulate
isolate
supplement
propensity
identify
motive
alternative
distribute
violate
terminology
configuration
translation
laboritory
geometry

I am not ever planning on playing this game again so don't expect to come back to see that I made additions to that list.

This is not a game for those looking for a fast reward, it's long, unless you are particularly god at hangman.

tips:

1 try actually finding a place to fit letters don't click all the vowels if you see that there are only 1 or 2 spaces between letters; there is a good chance there are no more vowels.

2 endings are usually easy to solve think about coomon endings on words and what you have, example tion, ate, ity.

good luck.

note I used a fake email so if I get swarmed with stuff I'm just going to delete it.