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Once in a lifetime

UK //wʌns ɪn ə ˈlaɪftaɪm// US //wʌns ɪn ə ˈlaɪftaɪm// Pronunciation

Definition

An experience that happens only once and is especially remarkable.

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In simple words: Something very special that happens only one time.

Examples

• Winning the lottery is a once in a lifetime chance that not many people get.
• Their trip to see the Northern Lights was a once in a lifetime experience.
• Some moments are once in a lifetime, like graduating from university.
• This concert is a once in a lifetime event you don't want to miss.
• Traveling to space is a once in a lifetime opportunity for most people.

Usage notes

Used to emphasize the uniqueness of an experience. Suitable for both formal and informal contexts.

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Grammar pattern

standalone phrase

Memory hint

Think of a special event like a wedding that only happens once.

Collocations

• once in a lifetime opportunity
• once in a lifetime experience
• once in a lifetime event

Synonyms

• unique opportunity
• rare occasion
• extraordinary event
• unrepeatable moment
• one-time chance

Common mistakes

• Confused with 'once in a blue moon', which means rarely.
• Used inappropriately for ordinary events.
• Misunderstood as a regular occurrence.