Verb

make less lively or vigorous

Verb

become dull or lusterless in appearance; lose shine or brightness

Verb

become less interesting or attractive

Verb

make dull in appearance

Verb

make dull or blunt

Verb

make numb or insensitive

Verb

deaden (a sound or noise), especially by wrapping

Adjective

(of business) not active or brisk

Adjective

emitting or reflecting very little light

Adjective

(of color) very low in saturation; highly diluted

Adjective

slow to learn or understand; lacking intellectual acuity

Adjective

darkened with overcast

Adjective

not having a sharp edge or point

Adjective

not keenly felt

Adjective

lacking in liveliness or animation

Adjective

so lacking in interest as to cause mental weariness

Adjective

being or made softer or less loud or clear

Adjective

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

Adjective

blunted in responsiveness or sensibility