Verb
1. irritate
2. annoy
3. vex
4. anger
5. exasperate
6. irk
7. gall
8. pique
9. nettle
11. get on someone's nerves
12. try someone's patience
14. rub the wrong way
15. aggravate
16. rile
17. needle
18. get to
19. bug
20. get someone's goat
22. tee off
23. tick off