BRIGHTENER Antonyms

• a rheostat that varies the current through an electric light in order to control the level of illumination

• a spy employed to follow someone and report their movements

• full of or covered with clouds

• lacking definite form or limits

• (of liquids) clouded as with sediment

• lacking in liveliness or animation

• emitting or reflecting very little light

• not keenly felt

• not having a sharp edge or point

• being or made softer or less loud or clear

• so lacking in interest as to cause mental weariness

• (of color) very low in saturation; highly diluted

• slow to learn or understand; lacking intellectual acuity

• (of business) not active or brisk

• blunted in responsiveness or sensibility

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

• darkened with overcast

• make dull in appearance

• become dull or lusterless in appearance; lose shine or brightness

• deaden (a sound or noise), especially by wrapping

• make numb or insensitive

• make dull or blunt

• become less interesting or attractive

• make less lively or vigorous

• not clearly expressed or understood

• marked by difficulty of style or expression

• difficult to find

• not famous or acclaimed

• not drawing attention

• remote and separate physically or socially

• make less visible or unclear

• make unclear, indistinct, or blurred

• make unintelligible or unclear

• reduce a vowel to a neutral one, such as a schwa

• make undecipherable or imperceptible by obscuring or concealing

• experiencing or showing sorrow or unhappiness

• of things that make you feel sad

• bad; unfortunate