lifetime
/ˈlaɪf.taɪm/
Proposed by a contributor, not yet supported by evidence.
Also seen as: lifetimes
Sense 1
Meaning · English
The duration of the life of someone or something.
Nghĩa · Tiếng Việt
Thời gian tồn tại của cuộc sống của ai đó hoặc thứ gì đó
Machine-translated — suggest a fix
Noun
Examples
a project that will take many human lifetimes to complete
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 2
Meaning · English
A long period of time.
NounRegister: informal
Examples
I've been waiting a lifetime for a train.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Common questions
What does “lifetime” mean?
The duration of the life of someone or something.
Is “lifetime” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.