cool (hot metal) by plunging into cold water or other liquid; "quench steel"
reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material) by adding a suitable substance
satisfy (thirst); "The cold water quenched his thirst"
electronics: suppress (sparking) when the current is cut off in an inductive circuit, or suppress (an oscillation or discharge) in a component or device
deep and harsh sounding as if from shouting or illness or emotion; "gruff voices"; "the dog's gruff barking"; "hoarse cries"; "makes all the instruments sound powerful but husky"- Virgil Thomson
not wise in the ways of the world; "either too unsophisticated or too honest to promise more than he could deliver"; "this helplessly unworldly woman"- Kate O'Brien
not sympathetic or disposed toward; "unsympathetic officialdom"; "people unsympathetic to the revolution"; "his dignity made him seem aloof and unsympathetic"
(of characters in literature or drama) tending to evoke antipathetic feelings; "all the characters were peculiarly unsympathetic"
not alert to danger or deception; "the shrieks of unwary animals taken by surprise"; "some thieves prey especially on unwary travelers"; "seduce the unwary reader into easy acquiescence"- O.J.Campbell
(of business) not active or brisk; "business is dull (or slow)"; "a sluggish market"
emitting or reflecting very little light; "a dull glow"; "dull silver badly in need of a polish"; "a dull sky"
(of color) very low in saturation; highly diluted; "dull greens and blues"
darkened with overcast; "a dark day"; "a dull sky"; "a grey rainy afternoon"; "grey clouds"; "the sky was leaden and thick"
not having a sharp edge or point; "the knife was too dull to be of any use"
not keenly felt; "a dull throbbing"; "dull pain"
lacking in liveliness or animation; "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"
being or made softer or less loud or clear; "the dull boom of distant breaking waves"; "muffled drums"; "the muffled noises of the street"; "muted trumpets"
not clear and resonant; sounding as if striking with or against something relatively soft; "the dull thud"; "thudding bullets"
blunted in responsiveness or sensibility; "a dull gaze"; "so exhausted she was dull to what went on about her"- Willa Cather
make less lively or vigorous; "Middle age dulled her appetite for travel"
become dull or lusterless in appearance; lose shine or brightness; "the varnished table top dulled with time"
make dull in appearance; "Age had dulled the surface"
make dull or blunt; "Too much cutting dulls the knife's edge"