1. Lacking brightness or colour; dull
   "children in sombre brown clothes"
   - drab, sober, somber [US] 
2. Grave or even gloomy in character
   "a suit of sombre black"; "a sombre mood"
   - somber [US], melancholy

See also: cheerless, colorless [US], colourless [Brit, Cdn], depressing, sombreness, uncheerful

Encyclopedia: Sombre

• porterhouse
• porterhouse steak
• portfolio
• porthole
• Portia
• portia tree
• portico
• porticoed
• portion
• portion out
• portière
• Portland
• Portland cement
• portliness
• portly
• portmanteau
• portmanteau word
• Porto
• Porto Alegre
• Porto Novo
• Porto Rico
• portolan
• portolano
• portrait
• portrait camera