1. Causing sad feelings of gloom and inadequacy
   "a moody and uncheerful person"; "an uncheerful place"
   - depressing, cheerless

See also: blue, cheer, cheerfulness, dark, dingy, disconsolate, dismal, drab, drear, dreary, gloomy, grim, joyless, melancholy, somber [US], sombre [Brit, Cdn], sorry, sunniness, sunshine, uncheerfulness, unhappy

• indecision
• indecisive
• indecisively
• indecisiveness
• indecorous
• indecorously
• indecorousness
• indecorum
• indeed
• indefatigability
• indefatigable
• indefatigableness
• indefatigably
• indefeasible
• indefectible
• indefensible
• indefensibly
• indefinable
• indefinably
• indefinite
• indefinite article
• indefinite integral
• indefinite quantity
• indefinitely
• indefiniteness