quirk
a peculiar or unexpected feature of someone's behavior or of a situation
One quirk of the old house was a door that opened onto a solid brick wall.
More GRE words starting with Q
a person who fraudulently claims medical or expert knowledge they do not possess
the fraudulent pretense of skill or knowledge, especially in medicine
to drink heartily and in large gulps
to limit or modify a statement so that it is less absolute
a state of uncertainty or perplexity over what to do
a period of enforced isolation to prevent the spread of disease
to suppress or put an end to, especially by force; to quiet or calm
habitually complaining in a peevish, whining manner
Learn words the way the GRE tests them.
Vocabulary sticks when you meet it in real sentences. Practise these words inside text completion and sentence equivalence questions.