A recent question on Meta discussed advantages and disadvantages of using more advanced words in ELL. As example, this answer was used:
'A Japanese' infers the Japanese person is a thing, and not a person. This is what deems it offensive.
'A Japanese Person' infers the Japanese person is just that - a person, and is therefore considered fine for use.
While the conclusion of the discussion is not related to this question, one comment disturbed me:
Unhappily, both words are misused there! – StoneyB 18 hours ago
Not to bundle two unrelated words and two different errors, let's focus on infers here. What is the misuse in the example? How should that word be used here correctly?