say it: SAHM-bur
somber is an adjective meaning "lacking brightness or color; dull". It carries 2 recorded senses.
grave or even gloomy in character
“solemn and mournful music”
“a suit of somber black”
“a somber mood”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for somber come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.