Moment vs One second

When to use each in English, with meaning, register, and examples.

Moment

Top 1,000 (very common)A1noun

One second

Top 2,000 (common)
Most common: Moment
 MomentOne second
Pronunciation🇬🇧 /["/ˈməʊmənt/"]/🇺🇸 /["/ˈməʊmənt/"]/🇬🇧 //wʌn ˈsɛk.ənd//🇺🇸 //wʌn ˈsɛk.ənd//
MeaningA very short period of time.A very short amount of time.
ExampleI need a moment to think about my decision.Can you wait just one second?
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelA1-
Part of speechnoun
Collocationsbrief, fleeting, passing, last, take, hesitate (for), arrive, come, occur, after a/​the moment, at a/​the moment, for a/​the moment, at a given moment, at any given moment, every waking moment, brief, fleeting, passing, last, take, hesitate (for), arrive, come, occur, after a/​the moment, at a/​the moment, for a/​the moment, at a given moment, at any given moment, every waking moment, brief, fleeting, passing, last, take, hesitate (for), arrive, come, occur, after a/​the moment, at a/​the moment, for a/​the moment, at a given moment, at any given moment, every waking momentwait one second, take one second, in one second, spend one second
Antonymseternity, forever-
Common mistakesUsing 'moment' to mean a long time instead of a short time., Confusing 'moment' with 'movement'., Mixing up 'moment' with 'measure' in phrases.Using 'seconds' instead of 'second' for a brief pause., Using it in entirely unrelated contexts, like long plans.
Usage notesUsed in everyday conversation. It's usually informal, but can be used in formal writing. Avoid using 'moment' to refer to a long duration of time.Use in casual conversation when timing something for a brief period. Avoid in highly formal contexts.

See it in real clips

Moment
One second

Frequently asked questions: Moment vs One second

What's the difference between Moment and One second?

Moment: A very short period of time. One second: A very short amount of time.

Which is more common: Moment and One second?

Moment is the most common in everyday English.

Can you show an example of each?

Moment: I need a moment to think about my decision. One second: Can you wait just one second?

Can I use Moment and One second interchangeably?

Not always. Moment and One second are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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