flaw

nouns

an imperfection in an object or machine
"a flaw caused the crystal to shatter"; "if there are any defects you should send it back to the manufacturer"
defect, fault, flaw
defect or weakness in a person's character
"he had his flaws, but he was great nonetheless"
flaw
is a type of (narrower)
a flaw or weak point
"he was quick to point out his wife's failings"
failing, weakness
an imperfection in a plan or theory or legal document that causes it to fail or that reduces its effectiveness
flaw
is a type of (narrower)
the state or an instance of being imperfect
imperfection, imperfectness

verbs

add a flaw or blemish to; make imperfect or defective
blemish, flaw