Answer: colorfast

AnswerCrossword Clue
COLORFASTUnchangeable, as a fabric
COLORFASTNot running
COLORFASTUnlikely to run
COLORFASTUnable to run
COLORFASTWhat impatient children do?
colorfasthaving colours that retain their original hue without running or fading also COLOURFAST
colorfastDyed in colors that will not fade or be washed out