Following are all the somber like words, in the list below.
SOMBRE
100% like somber
CHEERLESS
100% like somber
DRAB
99.99% like somber
COLOURLESS
99.91% like somber
UNCHEERFUL
99.88% like somber
SOBER
99.86% like somber
COLORLESS
99.59% like somber
GRIM
66.72% like somber
GLOOMY
66.72% like somber
DISMAL
66.71% like somber
SOBERING
66.71% like somber
BLEAK
66.71% like somber
SHADOWY
66.68% like somber
DUSKY
66.68% like somber
STARK
66.66% like somber
DARK
66.62% like somber
SOLEMN
33.44% like somber
MOURNFUL
33.44% like somber
PENSIVE
33.44% like somber
SORROWFUL
33.44% like somber
LUGUBRIOUS
33.44% like somber
MOROSE
33.44% like somber
DOLEFUL
33.44% like somber
MELANCHOLIC
33.44% like somber
MELANCHOLY
33.44% like somber
GLUM
33.44% like somber
POIGNANT
33.44% like somber
LIGHTHEARTED
33.44% like somber
OMINOUS
33.44% like somber
ELEGIAC
33.44% like somber
JOVIAL
33.44% like somber
UPBEAT
33.44% like somber
DOWNBEAT
33.44% like somber
EERIE
33.44% like somber
INTROSPECTIVE
33.44% like somber
WISTFUL
33.44% like somber
DOUR
33.44% like somber
STOIC
33.44% like somber
SOMBRENESS
33.44% like somber
JOYOUS
33.44% like somber
PORTENTOUS
33.44% like somber
SUBDUED
33.44% like somber
RUEFUL
33.44% like somber
CONTEMPLATIVE
33.44% like somber
SERENE
33.44% like somber
SULLEN
33.44% like somber
SARDONIC
33.44% like somber
FUNEREAL
33.44% like somber
PORTENTIOUS
33.44% like somber
CHEERY
33.44% like somber
MORBID
33.44% like somber
FOREBODING
33.44% like somber
REVERENT
33.44% like somber
TEARFUL
33.44% like somber
SOLEMNITY
33.44% like somber
CHEERFUL
33.44% like somber
MOURNFULNESS
33.44% like somber
JOYFUL
33.44% like somber
TRAGIC
33.44% like somber
MOODY
33.44% like somber
RUMINATIVE
33.44% like somber
REVERENTIAL
33.44% like somber
BITTERSWEET
33.44% like somber
GLOOMIER
33.44% like somber
MIRTHFUL
33.44% like somber
LACONIC
33.44% like somber
MELODRAMATIC
33.44% like somber
HEAVYHEARTED
33.44% like somber
HUSHED
33.44% like somber
MACABRE
33.44% like somber
DIGNIFIED
33.44% like somber
JUBILANT
33.44% like somber
DARKLY
33.44% like somber
DOLOROUS
33.44% like somber
DRAMATIC
33.44% like somber
FORLORN
33.44% like somber
MAUDLIN
33.44% like somber
AUSTERE
33.44% like somber
DREARY
33.44% like somber
HEARTFELT
33.44% like somber
CELEBRATIVE
33.44% like somber
PONDEROUS
33.44% like somber
SOMBRELY
33.44% like somber
DOWNCAST
33.44% like somber
OMINOUSNESS
33.44% like somber
HUMOROUS
33.44% like somber
JOCULAR
33.44% like somber
MELLOW
33.44% like somber
FORBODING
33.44% like somber
SURREAL
33.44% like somber
WHIMSICAL
33.44% like somber
SOULFUL
33.44% like somber
TACITURN
33.44% like somber
IMPASSIONATE
33.44% like somber
UNSETTLING
33.44% like somber
RAUCOUS
33.44% like somber
GRIMLY
33.44% like somber
DREAMLIKE
33.44% like somber
STOICAL
33.44% like somber
EERILY
33.44% like somber