- dull
- adj1. unintelligent, witless, slow-witted, dull-witted; stolid, obtuse, crass, Boeotian, bovine, blockish, lumpish; dense, thick-headed, Inf. thick, slow, stupid, Brit., Australian Inf. dill, Scot, and North Eng. dowf; backward, doltish, Sl. birdbrained, simple; empty-headed, vacuous; unimaginative, undiscerning.2. insensible, unfeeling, numb; callous, hardened, inured; unresponsive, insensitive, unsympathetic, unre-ceptive; passionless, indifferent, uncaring.3. sluggish, phlegmatic, lethargic, torpid, heavy, lifeless; languid, listless, spiritless, apathetic; inactive, inert, stagnant; lazy, oscitant, drowsy.4. tedious, tiresome, boring, boresome, wearisome, uninteresting, Sl. dead, dry, dry-as-dust; tasteless, bland, insipid, jejune, flat, vapid, Sl. for the birds, Sl. nothing, Sl. blah; uneventful, humdrum, monotonous, ordinary, run-of-the-mill, commonplace, prosaic, matter-of-fact.5. dreary, dismal, Scot, and North Eng. dowie, bleak, drab, somber; murky, lowering, gloomy, dark, sunless; cheerless, sad, melancholy.6. cloudy, dim, indistinct, blurred, blurry, gray, opaque; lackluster, lusterless, colorless, Optics. achromatic; tarnished, faded, washed out; deadened, dulled, muted, muffled, stifled, softened.7. blunt, unsharpened, dulled, pointless, edgeless.v8. blunt, take the edge off of, obtund; lessen, allay, assuage, alleviate, palliate; appease, soothe, relieve, ease, soften, cushion; slake, quench, deaden; decrease, diminish, reduce; modify, moderate, temper.9. stupefy, benumb, hebetate, besot; sedate, narcotize, opiate, drug, tranquilize, lethargize.10. fade, blanch, bleach, whiten, gray, wash out; etiolate, achromatize, decolor, decolorize.11. obscure, cloud, becloud, blur; darken, dim, bedim, bedull; tarnish, sully, stain.12. depress, deject, dishearten, dispirit, discourage; damp, dampen, throw cold water on, throw a wet blanket on, cast a pall over.
A Note on the Style of the synonym finder. 2014.