dull

Adjective
  1. Lacking in liveliness or animation (synset 300810082)
    "he was so dull at parties"; "a dull political campaign"; "a large dull impassive man"; "dull days with nothing to do"; "how dull and dreary the world is"; "fell back into one of her dull moods"
    also:
    tells us about: dullness - the quality of lacking interestingness
    similar to:
  2. Emitting or reflecting very little light (synset 300284569)
    "a dull glow"; "dull silver badly in need of a polish"; "a dull sky"
    also: unpolished - not carefully reworked or perfected or made smooth by polishing
    tells us about: brightness, brightness level, light, luminance, luminosity, luminousness - the quality of being luminous; emitting or reflecting light
    similar to:
  3. Being or made softer or less loud or clear (synset 301457764)
    "the dull boom of distant breaking waves"; "muffled drums"; "the muffled noises of the street"; "muted trumpets"
    similar to: soft - (of sound) relatively low in volume
    same as: muffled, muted, softened
  4. So lacking in interest as to cause mental weariness (synset 301348155)
    "a boring evening with uninteresting people"; "the deadening effect of some routine tasks"; "a dull play"; "his competent but dull performance"; "a ho-hum speaker who couldn't capture their attention"; "what an irksome task the writing of long letters is"; "tedious days on the train"; "the tiresome chirping of a cricket"; "other people's dreams are dreadfully wearisome"
    similar to: uninteresting - arousing no interest or attention or curiosity or excitement
    same as: boring, deadening, ho-hum, irksome, slow, tedious, tiresome, wearisome
  5. (of color) very low in saturation;
    Highly diluted (synset 300395053)
    "dull greens and blues"
    similar to: unsaturated - (of color) not chromatically pure; diluted
  6. Not keenly felt (synset 300807541)
    "a dull throbbing"; "dull pain"
    similar to: deadened - made or become less intense
  7. Slow to learn or understand;
    Lacking intellectual acuity (synset 300442596)
    "so dense he never understands anything I say to him"; "never met anyone quite so dim"; "although dull at classical learning, at mathematics he was uncommonly quick"; "dumb officials make some really dumb decisions"; "he was either normally stupid or being deliberately obtuse"; "worked with the slow students"
    similar to: stupid - lacking or marked by lack of intellectual acuity
    same as: dense, dim, dumb, obtuse, slow
  8. (of business) not active or brisk (synset 300037111)
    "business is dull (or slow)"; "a sluggish market"
    referred to in: business, business enterprise, commercial enterprise - the activity of providing goods and services involving financial and commercial and industrial aspects
    similar to: inactive - lacking activity; lying idle or unused
    same as: slow, sluggish
  9. Not having a sharp edge or point (synset 300803819)
    "the knife was too dull to be of any use"
    similar to:
  10. Blunted in responsiveness or sensibility (synset 302114914)
    "a dull gaze"; "so exhausted she was dull to what went on about her"
    similar to: insensitive - deficient in human sensibility; not mentally or morally sensitive
  11. Not clear and resonant;
    Sounding as if striking with or against something relatively soft (synset 302018718)
    "the dull thud"; "thudding bullets"
    similar to: nonresonant, unreverberant - not reverberant; lacking a tendency to reverberate
    same as: thudding
  12. Darkened with overcast (synset 300464282)
    "a dark day"; "a dull sky"; "the sky was leaden and thick"
    similar to: cloudy - full of or covered with clouds
    same as: leaden
Verb
  1. Make dull in appearance (synset 201248885)
    "Age had dulled the surface"
    is a type of: alter, change, modify - cause to change; make different; cause a transformation
  2. Become dull or lusterless in appearance;
    Lose shine or brightness (synset 200392673)
    "the varnished table top dulled with time"
    is a type of: change - undergo a change; become different in essence; losing one's or its original nature
  3. Deaden (a sound or noise), especially by wrapping (synset 202195757)
    is a type of: soften - make (images or sounds) soft or softer
    same as: damp, dampen, muffle, mute, tone down
  4. Make numb or insensitive (synset 202119756)
    "The shock numbed her senses"
    is a type of: desensitise, desensitize - cause not to be sensitive
    same as: benumb, blunt, numb
  5. Make dull or blunt (synset 201249008)
    "Too much cutting dulls the knife's edge"
    is a type of: alter, change, modify - cause to change; make different; cause a transformation
    same as: blunt
  6. Become less interesting or attractive (synset 200539279)
    is a type of: change - undergo a change; become different in essence; losing one's or its original nature
    same as: pall
  7. Make less lively or vigorous (synset 200392374)
    "Middle age dulled her appetite for travel"
    is a type of: weaken - become weaker
    subtypes: cloud - make milky or dull

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