dull

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”

emitting or reflecting very little light

“a dull glow”

“dull silver badly in need of a polish”

“a dull sky”

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”

so lacking in interest as to cause mental weariness

“a boring evening with uninteresting people”

“the deadening effect of some routine tasks”

“a dull play”

“his competent but dull performance”

(of color) very low in saturation; highly diluted

“dull greens and blues”

not keenly felt

“a dull throbbing”

“dull pain”

make dull in appearance

“Age had dulled the surface”

become dull or lusterless in appearance; lose shine or brightness

“the varnished table top dulled with time”

deaden (a sound or noise), especially by wrapping

make numb or insensitive

“The shock numbed her senses”

make dull or blunt

“Too much cutting dulls the knife's edge”

become less interesting or attractive