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Definition flag in British English

flag verb

verb
/flæɡ/
1

to become tired or weak, or to begin to lack enthusiasm

Example

After a long day, his energy flagged.

Example

The conversation was flagging until the mention of her name.

Synonyms and related words
2

to mark something so that you will be able to find it again

Example

I flagged any words I didn't know.

Synonyms and related words
Definition flag in British English