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light up

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90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.



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phrasal verb
Word Forms
present tense
I/you/we/theylight up
he/she/itlights up
present participlelighting up
past tenselit up
past participlelit up

Related dictionary definitions

  1. 2
    [transitive] same as light3 (sense 2)

    They could see the airport lit up far below them.

    Fireworks were lighting up the night sky.

  2. 3
    [intransitive] to become bright or light

    There was a flash of lightning and the sky lit up.

  3. 4
    [intransitive] if a light lights up, it starts to shine

    A warning signal lit up on the dashboard.

  4. 5
    [intransitive/transitive] if someone's face or eyes light up, they express a strong emotion, usually happiness or excitement

    Antony's eyes lit up when Keiko walked into the room.

See also main entry: light


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