Main entry: dull, blunt
Definition: make dull or blunt
Usage: Too much cutting dulls the knife's edge
Antonyms: sharpen
Definition: make sharp or sharper
Main entry: dull
Definition: emitting or reflecting very little light
Usage: a dull glow; dull silver badly in need of a polish; a dull sky
Antonyms: bright
Definition: emitting or reflecting light readily or in large amounts
Antonyms: contrasty
Definition: having sharp differences between black and white
Antonyms: natural
Definition: (of a musical note) being neither raised nor lowered by one chromatic semitone
Antonyms: sharp
Definition: (of a musical note) raised in pitch by one chromatic semitone
Antonyms: hard
Definition: resisting weight or pressure
Antonyms: hard
Definition: dispassionate
Antonyms: hard
Definition: (of speech sounds); produced with the back of the tongue raised toward or touching the velum
Antonyms: hard, concentrated
Definition: (of light) transmitted directly from a pointed light source
Antonyms: loud
Definition: characterized by or producing sound of great volume or intensity
Antonyms: hardened
Definition: protected against attack (especially by nuclear weapons)
Main entry: dull
Definition: not having a sharp edge or point
Usage: the knife was too dull to be of any use
Antonyms: sharp
Definition: having or made by a thin edge or sharp point; suitable for cutting or piercing
Main entry: dull
Definition: not keenly felt
Usage: a dull throbbing; dull pain
Antonyms: sharp
Definition: keenly and painfully felt; as if caused by a sharp edge or point
Main entry: dull
Definition: lacking in liveliness or animation
Usage: 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
Antonyms: lively
Definition: full of life and energy
Antonyms: light
Definition: of comparatively little physical weight or density
Antonyms: light
Definition: psychologically light; especially free from sadness or troubles
Antonyms: light
Definition: not great in degree or quantity or number
Antonyms: light
Definition: (physics, chemistry) not having atomic weight greater than average
Antonyms: light
Definition: of little intensity or power or force
Antonyms: light
Definition: of the military or industry; using (or being) relatively small or light arms or equipment
Main entry: dim, dense, dull, dumb, obtuse, slow
Definition: slow to learn or understand; lacking intellectual acuity
Usage: 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- Thackeray; dumb officials make some really dumb decisions; he was either normally stupid or being deliberately obtuse; worked with the slow students
Antonyms: smart
Definition: showing mental alertness and calculation and resourcefulness
Main entry: dull, slow, sluggish
Definition: (of business) not active or brisk
Usage: business is dull (or slow); a sluggish market
Antonyms: active
Definition: characterized by energetic activity
Antonyms: active
Definition: engaged in full-time work
Antonyms: active
Definition: full of activity or engaged in continuous activity
Antonyms: active
Definition: tending to become more severe or wider in scope
Antonyms: active
Definition: exerting influence or producing a change or effect
Main entry: softened, dull, muffled, muted
Definition: being or made softer or less loud or clear
Usage: the dull boom of distant breaking waves; muffled drums; the muffled noises of the street; muted trumpets
Antonyms: hard
Definition: resisting weight or pressure
Antonyms: hard
Definition: dispassionate
Antonyms: hard
Definition: (of speech sounds); produced with the back of the tongue raised toward or touching the velum
Antonyms: hard, concentrated
Definition: (of light) transmitted directly from a pointed light source
Antonyms: loud
Definition: characterized by or producing sound of great volume or intensity
Antonyms: hardened
Definition: protected against attack (especially by nuclear weapons)
Main entry: dull
Definition: (of color) very low in saturation; highly diluted
Usage: dull greens and blues
Definition: (of color) being chromatically pure; not diluted with white or grey or black
Antonyms: saturated
Definition: used especially of organic compounds; having all available valence bonds filled
Antonyms: concentrated, saturated
Definition: being the most concentrated solution possible at a given temperature; unable to dissolve still more of a substance
Main entry: dull, leaden
Definition: darkened with overcast
Usage: a dark day; a dull sky; the sky was leaden and thick
Antonyms: clear
Definition: free from clouds or mist or haze
Main entry: tiresome, tedious, irksome, boring, ho-hum, slow, dull, deadening, wearisome
Definition: so lacking in interest as to cause mental weariness
Usage: 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- Edmund Burke; tedious days on the train; the tiresome chirping of a cricket- Mark Twain; other people's dreams are dreadfully wearisome
Antonyms: interesting
Definition: arousing or holding the attention
Main entry: dull, thudding
Definition: not clear and resonant; sounding as if striking with or against something relatively soft
Usage: the dull thud; thudding bullets
Antonyms: reverberant
Definition: having a tendency to reverberate or be repeatedly reflected
Main entry: dull
Definition: blunted in responsiveness or sensibility
Usage: a dull gaze; so exhausted she was dull to what went on about her- Willa Cather
Antonyms: sensitive
Definition: responsive to physical stimuli
Antonyms: sensitive
Definition: being susceptible to the attitudes, feelings, or circumstances of others