flaw

Meanings

• an imperfection in an object or machine
  • "a flaw caused the crystal to shatter"
• defect or weakness in a person's character
  • "he had his flaws, but he was great nonetheless"
• an imperfection in a plan or theory or legal document that causes it to fail or that reduces its effectiveness
• add a flaw or blemish to; make imperfect or defective

Synonyms

blemish, defect, fault