Answer: penetrant

AnswerCrossword Clue
PENETRANTSharp; subtle.
PENETRANTPiercing, sharp.
PENETRANTSharp.
PENETRANTPiercing.
PENETRANTSharp, acute insect
PENETRANTPiercer
penetrantpenetrating
penetrantpenetrating / a substance which increases the penetrating power of a liquid