Answer:

INKIN

AnswerCrossword Clue
INKINBlacken with a pen
INKINFinalize with pen
INKINFinish, as a comic strip
INKINFinalize, as a comic strip
INKINFinalize, as a cartoon
INKINComplete, as a comic strip
INKINWrite so it can't be easily erased
INKINColor, as a cartoon
INKINComplete, as a cartoon
INKINComplete, as a comic
INKINFinish a drawing as a cartoonist does.
INKINFinish a drawing.
INKINMake permanent, as cartoon drawings
INKINFully blacken
INKINFinish, as a tattoo
INKINFinish coloring, as a tattoo
INKINColor with a pen
INKINMake permanent, as a signature