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make certain

idiom

Definition of make certain

: to do something or find out something so that one has no doubt about whether something is true, correct, will happen, etc.
  • Make certain (that) you lock the door when you leave.
  • We must make certain this doesn't happen again.
  • She made certain she thanked each of them for coming.

Word by Word Definitions

make play

  1. : behave, act

  2. : to begin or seem to begin (an action)

  3. : to cause to happen to or be experienced by someone

  1. : the manner or style in which a thing is constructed

  2. : brand

  3. : the physical, mental, or moral constitution of a person

See the full definition of make
certain play

  1. : fixed, settled

  2. : of a specific but unspecified character, quantity, or degree

  3. : dependable, reliable

  1. : certain ones

See the full definition of certain

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