once-in-a-lifetimeadjective [ before noun ]
uk/ˌwʌn.sɪnəˈlaɪf.taɪm/us/ˌwʌn.sɪnəˈlaɪf.taɪm/A once-in-a-lifetime experience or opportunity is very special because you will probably only have it once:
A tour of Australia is a once-in-a-lifetime experience.
Thesaurus: synonyms and related words
Unique and unusual
- accidental
- alt-
- alternative
- alternative lifestyle
- be marked out as sth idiom
- be one in a million idiom
- extraordinary
- fantastic
- guerrilla
- incongruous
- inimitable
- irreplaceable
- personalize
- rarity
- refreshing
- remarkable
- remarkably
- signally
- singular
- singularly
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You can also find related words, phrases, and synonyms in the topics:
Rarely & infrequently