dull

Sense 1 verb

make dull in appearance

Age had dulled the surface

Sense 2 adjective

lacking in liveliness or animation

he was so dull at parties

Sense 3 verb

become dull or lusterless in appearance; lose shine or brightness

the varnished table top dulled with time

Sense 4 adjective

emitting or reflecting very little light

a dull glow

Sense 5 verb

deaden (a sound or noise), especially by wrapping

Sense 6 adjective

being or made softer or less loud or clear

the dull boom of distant breaking waves

Sense 7 verb

make numb or insensitive

The shock numbed her senses

Sense 8 adjective

so lacking in interest as to cause mental weariness

a boring evening with uninteresting people

Sense 9 verb

make dull or blunt

Too much cutting dulls the knife's edge

Sense 10 adjective

(of color) very low in saturation; highly diluted

dull greens and blues

Sense 11 verb

become less interesting or attractive

Sense 12 adjective

not keenly felt

a dull throbbing

Sense 13 verb

make less lively or vigorous

Middle age dulled her appetite for travel

Sense 14 adjective

slow to learn or understand; lacking intellectual acuity

so dense he never understands anything I say to him

Sense 15 adjective

(of business) not active or brisk

business is dull (or slow)

Sense 16 adjective

not having a sharp edge or point

the knife was too dull to be of any use

Sense 17 adjective

blunted in responsiveness or sensibility

a dull gaze

Sense 18 adjective

not clear and resonant; sounding as if striking with or against something relatively soft

the dull thud

Sense 19 adjective

darkened with overcast

a dark day