lightfast

light·fast

adj \-ˌfast\

Definition of LIGHTFAST

: resistant to light and especially to sunlight; especially : colorfast to light

— light·fast·ness \-ˌfas(t)-nəs\ noun

First Known Use of LIGHTFAST

1950

Rhymes with LIGHTFAST

aghast, at last, avast, bedfast, Belfast, bombast, broadcast, bypast, contrast, dicast, dismast, downcast, dynast, fantast, flypast, forecast, foremast, forepassed, full blast, gymnast, half-caste, half-mast, handfast, holdfast, mainmast, makefast, march-past, miscast, newscast, oblast, offcast, outcast, outcaste, precast, recast, repast, roughcast, sandblast, sand-cast, shamefast, sportscast, topmast, trade-last, typecast, upcast, webcast, windblast