lighten up

Definitions of lighten up
  1. verb
    make lighter or brighter
    synonyms: brighten, lighten
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    Antonyms:
    darken
    make dark or darker
    type of:
    alter, change, modify
    cause to change; make different; cause a transformation
  2. verb
    become lighter
    synonyms: lighten
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    Antonyms:
    darken
    become dark or darker
    types:
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    irradiate
    cast rays of light upon
    illume, illuminate, illumine, light, light up
    make lighter or brighter
    floodlight
    illuminate with floodlights
    spotlight
    illuminate with a spotlight, as in the theater
    type of:
    change
    undergo a change; become different in essence; losing one's or its original nature
  3. verb
    make more cheerful
    synonyms: buoy up, lighten
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    Antonyms:
    weigh down, weigh on
    be oppressive or disheartening to
    type of:
    cheer
    show approval or good wishes by shouting
  4. verb
    become more cheerful
    synonyms: buoy up, lighten
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    type of:
    cheer, cheer up, chirk up
    become cheerful
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