Synonyms for Lighten up:

• n.

  •
  • in earnest,
  • humorlessly,
  • funereal,
  • stolid,
  • officious,
  • serious,
  • sober,
  • solemn,
  • substantial,
  • deep.
  •brighten (noun)
  • brighten.

• v.

  •change (verb)
  • lighten up.
  •Other relevant words: (verb)
  • cheer up,
  • alter,
  • modify,
  • cheer,
  • Chirk Up,
  • lighten,
  • change.
  •relent (verb)
  • forbear,
  • fold,
  • ebb,
  • wane,
  • cry uncle,
  • subside,
  • capitulate,
  • give in,
  • comply,
  • slow,
  • melt,
  • let go,
  • weaken,
  • yield,
  • drop,
  • quit,
  • fall,
  • acquiesce.

• Other synonyms:

  •Other relevant words:
  • shows mercy,
  • caving in,
  • go along with,
  • showed mercy,
  • going easy on,
  • laid back,
  • showing mercy,
  • letting go,
  • giving way,
  • come around,
  • relent,
  • have mercy,
  • die away,
  • be merciful,
  • show mercy,
  • easing off,
  • aways,
  • ease off,
  • change one's mind,
  • let it happen,
  • mellow out,
  • have pity,
  • go easy on,
  • lets go,
  • gave way,
  • lay back,
  • give some slack,
  • change mind,
  • cool it,
  • give quarter,
  • ease up on,
  • caves in,
  • give up,
  • say uncle,
  • give way,
  • cave in.
  •Other relevant words (noun):
  • illumine,
  • assuage,
  • moderate,
  • buoy up,
  • placate,
  • remit,
  • allay,
  • mollify,
  • decrease,
  • mitigate,
  • lessen,
  • quiet,
  • blunt,
  • calm,
  • ease,
  • tone down,
  • temper,
  • reduce,
  • tranquillize,
  • palliate,
  • still,
  • slacken,
  • soothe,
  • dull,
  • quieten,
  • light,
  • abate,
  • ease up,
  • appease,
  • soften,
  • relieve,
  • relax,
  • alleviate.

Antonyms for Lighten up:

• n.

  • other_words
    weigh on, weigh down.

• v.

  • change
    darken.
  • relent
    build, advance, ascend, free, grow, increase, worry, continue, rise.

Hypernym for Lighten up:

• v.

  • change
    illumine, illuminate, light up, irradiate, light, illume.

Hyponym for Lighten up:

• v.

  • change
    change.