Adjective
1. attractive
2. lovely
3. good-looking
4. nice-looking
5. personable
6. fetching
7. prepossessing
8. appealing
9. charming
10. delightful
11. cute
12. as pretty as a picture
13. bonny
14. easy on the eye
15. beauteous
16. fair
17. comely
Adverb
18. quite
19. rather
20. somewhat
21. fairly
24. relatively
Verb
25. beautify
26. make attractive
27. make pretty
28. prettify
29. adorn
30. ornament
31. smarten
32. do oneself up
33. titivate