Hello!
This Topic is about 400 Words of TOEFL course, created by Memrise.
I’d like to report a few inaccuracies I’ve found in the course. I hope this is the right place to do that.
Below is the list of inaccuracies I found. There may be others I didn’t notice. Or maybe I’ve noticed something I shouldn’t 
Anyway, here they are:
Level 1
adversely — adverb with definition of an adjective
to obtain — would be nice to add ‘acquire’ to the definition. Similarly it would be helpful to add ‘obtain’ to the definition of ‘acquire’. This is useful when you have to guess the word from the definition and you are not sure which one the system is expecting.
Level 2
exponentially — probably the more accurate definition would be “at in INCREASING rate”
Level 4
an intermediary — a noun with definition of an adjective
psychic — an adjective with definition of a noun. Or else if “psychic” means a person who is sensitive to parapsychological forces or influences, than the definition should be amended 
Level 5
inherent — an adjective with definition of a noun
Level 7
a vein — singular noun with definition of plural. Can be confusing
fatally — adverb with definition of adjective. “Fatal” would be more accurate, I think.
Level 8
rigor — noun with definition of adjective
Orwellian — adjective with definition of noun
Level 9
to be in the trenches — a verb phrase with definition of an adverb
Level 10
to acquire — would be nice to add “obtain” to the definition (See notes to Level 1)
Level 11
entrepreneurial — adjective with definition of noun
proportionately — adverb with definition of adjective
Level 12
cynically — adverb with definition of adjective
intrusively — adverb with definition of adjective
Level 14
deviant — adjective with definition of adverb
Level 15
associate — would be nice to add “to” to be consistent with all other verbs in this course.
Level 17
a conflict — noun with definition of verb
Level 18
objectively — adverb with definition of adjective
esthetically — adverb with definition of adjective
Parts of speech are also occasionally indicated incorrectly. I didn’t make a list of those because I can’t see the parts of speech except when in Review or Learn mode.
I hope this was helpful.
Best regards.
