light up a room

English

Verb

light up a room (third-person singular simple present lights up a room, present participle lighting up a room, simple past and past participle lit up a room)

(informal, idiomatic) To possess great energy and appeal; to cause a social gathering to become animated and cheerful.
her eyes could light up a room

Usage notes

This expression has become somewhat hackneyed and cliched.

See also

light up like a Christmas tree

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