once in a lifetime

Definition of once in a lifetime

:very rare or very rarely
  • a once-in-a-lifetime opportunity
  • This sort of opportunity comes along once in a lifetime.

Word by Word Definitions

once play
  1. : one time and no more

  2. : at any one time : under any circumstances : ever

  3. : at some indefinite time in the past : formerly

  1. : one single time : one time at least

  1. : that once was : former

  1. : at the moment when : as soon as

lifetime play
  1. : the duration of the existence of a living being (such as a person or an animal) or a thing (such as a star or a subatomic particle)

  2. : life

  3. : an amount accumulated or experienced in a lifetime

  1. : lifelong

  2. : of long duration or continuance

  3. : measured or achieved over the span of a career


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to conform or adhere

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