Answer: thinner

AnswerCrossword Clue
THINNERAdditive to paint.
thinnersomething that thins
thinnerA volatile solvent used to make paint or other mixtures less viscous
THINNERTurps, for one
THINNERMore emaciated
THINNEROppothite of a thaint
THINNERPainter's aid
THINNERTurpentine, at times
THINNERTurpentine, for one.
THINNERTurpentine, for example.
THINNERAgent in paints
THINNERLiquid added to paint.
THINNERMore svelte.
THINNERMore diluted.
THINNERRichard Bachman novel
THINNERLess corpulent
THINNERPaint additive
THINNERNot so bulky
THINNERIt's used for the sake of consistency
THINNERTurpentine, e.g.