American Dictionary

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Definition set off in American English

set off phrasal verb

phrasal verb
1

to leave on a trip or start going somewhere

Example

We set off early the next morning.

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2

to cause something to operate, especially by accident

Example

Jeff pushed open the front door, which set off the alarm.

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3

to make something explode

Example

Somebody was setting off firecrackers down the street.

Synonyms and related words
4

to cause a situation or a series of events to happen, especially without intending to

Example

He fears that the election could set off mass protests.

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5

to make someone or something look more attractive by being clearly different from them

Example

Her plain blue dress was set off by a feather-trimmed hat.

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6

to make someone start to laugh, cry, or talk a lot

Example

Just mentioning her father's death could set her off again.

Synonyms and related words
Definition set off in American English