C1noun2K

Flaw

UK /["/flɔː/"]/US /["/flɔː/"]/

Definition

a mistake in something that means that it is not correct or does not work correctly

In simple words: A mistake or defect in something.

Examples

  • The diamond was nearly perfect, but it had a tiny flaw that lowered its value.
  • There is a serious flaw in the argument that needs to be addressed.
  • Despite the design flaw, the machine functioned well under most conditions.
  • Her character is admirable, but she acknowledges a flaw in her patience.
  • The software has a flaw that causes it to crash unexpectedly.
  • Every human has some flaw, which makes us all imperfect.
  • The flaw in the glass made it unsafe for use in construction.
  • The plan was well thought out but had a fatal flaw.
  • Detecting a flaw in the security system prevented a potential breach.
  • The flaw in their reasoning showed that their conclusion was unreliable.

Usage notes

Use 'flaw' to describe imperfections in objects, plans, or arguments. It's appropriate in both spoken and written contexts but is less likely to be used in very casual or slang conversations.

Grammar pattern

flaw + noun (e.g., flaw in a plan)

Memory hint

Sounds like 'law' — imagine a broken law as a flaw.

Collocations

  • big
  • main
  • major
  • contain
  • have
  • look for
  • appear
  • become apparent
  • flaw in
  • big
  • main
  • major
  • contain
  • have
  • look for
  • appear
  • become apparent
  • flaw in
  • big
  • main
  • major
  • contain
  • have
  • look for
  • appear
  • become apparent
  • flaw in

Synonyms

  • defect, fault

Antonyms

  • perfection
  • strength
  • virtue

Common mistakes

  • Confused with 'flawless' — they are opposites.
  • Using 'flaw' as a verb (it is a noun).
  • Overusing it in casual speech; it's more formal.