SynonymDefinitionAntonym.com - English Synonym Dictionary

Become dull or lusterless in appearance; lose shine or brightness

Make less lively or vigorous

Become less interesting or attractive

Make dull in appearance

Make dull or blunt

Deaden (a sound or noise), especially by wrapping

Make numb or insensitive

Not having a sharp edge or point

Emitting or reflecting very little light

Lacking in liveliness or animation

Not keenly felt

Darkened with overcast

(of business) not active or brisk

Blunted in responsiveness or sensibility

Being or made softer or less loud or clear

Slow to learn or understand; lacking intellectual acuity

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

(of color) very low in saturation; highly diluted

So lacking in interest as to cause mental weariness