Hang on vs One sec

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

Hang on

Top 2,000 (common)

One sec

InformalTop 2,000 (common)
Most formal: Hang on
 Hang onOne sec
Pronunciation🇬🇧 //hæŋ ɒn//🇺🇸 //hæŋ ɔn//🇬🇧 //wʌn sɛk//🇺🇸 //wʌn sɛk//
MeaningWait for a moment.A short wait or pause.
ExampleCan you hang on for a minute?Can you give me one sec to finish this?
RegisterNeutralInformal
How commonTop 2,000 (common)Top 2,000 (common)
Collocationshang on a moment, hang on tight, hang on the linegive me one sec, be with you in one sec, hold on one sec
Common mistakesUsing 'hang up' instead of 'hang on' for waiting., Confusing with 'hold on' — both mean similar things, but 'hold on' can sound more urgent.Using 'one sec' in formal emails., Mispronouncing it as 'one second' when meant informally., Confusing with other phrases like 'hold on'.
Usage notesUsed informally to ask someone to wait. It’s best in casual conversations but may sound unprofessional in formal settings.Use 'one sec' in casual conversations to ask someone to wait briefly. Avoid in formal settings.

See it in real clips

Hang on
One sec

Frequently asked questions: Hang on vs One sec

What's the difference between Hang on and One sec?

Hang on: Wait for a moment. One sec: A short wait or pause.

Which is more formal: Hang on and One sec?

Hang on is the most formal of these.

Can you show an example of each?

Hang on: Can you hang on for a minute? One sec: Can you give me one sec to finish this?

Can I use Hang on and One sec interchangeably?

Not always. Hang on and One sec 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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