1) Act in opposition to 2) Annoy 3) Antagonise 4) Bother 5) Chafe 6) Come between 7) Devil 8) Get at 9) Get to 10) Gravel 11) Irritate 12) Nark 13) Nettle 14) Provoke 15) Provoke the hostility of 16) Rile 17) Rub the wrong way 18) To oppose 19) To work against 1) Antagonise 2) Counteract 3) Getat 4) Rile 
• (v. i.) To act in opposition. • (v. t.) To contend with; to oppose actively; to counteract.
An·tag'o·nize transitive verb [ imperfect & past participle Antagonized ; present participle & verbal noun Antagonozing .] [ Greek .... See Antagonism .] To contend with; to oppose actively; to counteract. 
[v] - act in opposition to 2. [v] - provoke the hostility of
antagonise verb provoke the hostility of; `Don`t antagonize your boss`
[ACT vocabulary] provoke the hostility of