14 possible answers to
Answers with 3 characters: PIT Answers with 4 characters: BUCK FACE MEET Answers with 5 characters: REPEL RIVAL Answers with 6 characters: COMBAT NAYSAY REPUGN RESIST Answers with 7 characters: CONTEST Answers with 11 characters: SIDEAGAINST Answers with 13 characters: LOCKHORNSWITH Answers with 15 characters: MILITATEAGAINST