The meaning of LIGHT UP is to become lit : to begin shining —often used figuratively to express interest or pleasure. How to use light up in a sentence.

LIGHT SOMETHING UP definition: 1. If a smile lights up your face, you suddenly look happy: 2. to create excitement or happiness…. Learn more.

Become or cause to become more animated or cheerful, as in Her laughter lit up the whole room, or His face lit up when he saw her. This expression transfers physical illumination to human …

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The meaning of LIGHT UP (SOMETHING) is to provide light for (something) : to fill (something) with light —often used figuratively. How to use light up (something) in a sentence.

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Definition of light up phrasal verb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

If you light up, you make a cigarette, cigar, or pipe start burning and you start smoking it.

Derived forms: lights up, lit up, lighting up Type of: alter, catch fire, change, combust, conflagrate, erupt, ignite, light, lighten, lighten up, take fire, vary

From Longman Dictionary of Contemporary English light up phrasal verb 1 light something ↔ up to give light to a place or to shine light on something The flames lit up the sky.