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pung-, punc-, punct- (Latin: pierce, sting, bite; dot, mark; point, sharp point, pinpoint).


appoint:
appointment:
compunction:
disappoint:
disappointment:
expugn:
expunction:
expunge:
impugn:
interpunction:
punctilious:
punctual:
punctuate:
punctuation:
puncture:
pungency:
pungent: