dull (d l)adj. dull·er, dull·est 1. Intellectually weak or obtuse; stupid. 2. Lacking responsiveness or alertness; insensitive. 3. Dispirited; depressed. 4. Not brisk or rapid; sluggish: Business is dull. 5. Not having a sharp edge or point; blunt: a dull knife. 6. Not intensely or keenly felt: a dull ache. 7. Arousing no interest or curiosity; boring: a dull play. 8. Not bright or vivid. Used of a color: a dull brown. 9. Cloudy or overcast: a dull sky. 10. Not clear or resonant: a dull thud. tr. & intr.v. dulled, dull·ing, dulls To make or become dull. [Middle English dul; akin to Old English dol.] dull  ish adj.dull ness, dulness n.dul ly adv.Synonyms: dull, colorless, drab1, humdrum, lackluster, pedestrian, stodgy, uninspired These adjectives mean lacking in liveliness, charm, or surprise: a dull, uninteresting performance; a colorless and unimaginative person; a drab and boring job; a humdrum conversation; a lackluster life; a pedestrian movie plot; a stodgy dinner party; an uninspired lecture. Antonym: lively |
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