fade

Synonyms: achromatize become colorless blanch bleach blench clear decolorize dim disappear discolor dissolve dull etiolate evanish evaporate grow dim lose brightness lose luster muddy neutralize pale tarnish tone down vanish wash out

Antonyms: brighten color sharpen strengthen

Synonyms: abate attenuate clear decline deliquesce deteriorate die away die on vine dim diminish disappear disperse dissolve droop ebb etiolate evanesce evanish evaporate fag out fail fall flag fold hush languish lessen melt melt away moderate perish peter out poop out quiet rarefy shrivel sink slack off taper thin tire tucker out vanish wane waste away weaken wilt wither

Antonyms: enhance improve recover strengthen