lighten up

light·en ¹  (ltn)

v. light·ened, light·en·ing, light·ens

v.tr.

1.

a. To make light or lighter; illuminate or brighten.

b. To make (a color) lighter.

2. Archaic To enlighten.

v.intr.

1. To become lighter; brighten.

2. To be luminous; shine.

3. To give off flashes of lightning.

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light·en ²  (ltn)

v. light·ened, light·en·ing, light·ens

v.tr.

1. To make less heavy.

2. To lessen the oppressiveness, trouble, or severity of. See Synonyms at relieve.

3. To relieve of cares or worries; gladden.

v.intr.

1. To become less in weight.

2. To become less oppressive, troublesome, or severe.

3. To become cheerful.

Phrasal Verb:

lighten up Informal

To take matters less seriously: Everything will work out fine, so stop worrying and lighten up.

Thesaurus

Verb	1.	lighten up - make more cheerful; "the conversation lightened me up a bit" lighten, buoy up cheer - show approval or good wishes by shouting; "everybody cheered the birthday boy"
	2.	lighten up - become more cheerful; "after a glass of wine, he lightened up a bit" buoy up, lighten chirk up, cheer up, cheer - become cheerful
	3.	lighten up - make lighter or brighter; "The paint will brighten the room" brighten, lighten alter, change, modify - cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue"
	4.	lighten up - become lighter; "The room lightened up" lighten change - undergo a change; become different in essence; losing one's or its original nature; "She changed completely as she grew older"; "The weather changed last night" irradiate - cast rays of light upon illume, illuminate, illumine, light, light up - make lighter or brighter; "This lamp lightens the room a bit"

Translations

? lighten up

vi (inf) → die Dinge leichter nehmen; lighten up! → nimms leicht!