A synonym is a word that means something similar to another word. An antonym is a word that means the opposite of another word. Underline the SYNONYMS and check your answers with the key. You may use a standard dictionary.
1. Odious (adj.): abominable / pleasant
2. Offend (v.): please / annoy
3. Offensive (adj.): annoying / delightful
4. Offhand (adj.): planned / careless
5. Official (adj.): unofficial / approved
6. Offspring (n.): child / parent
7. Often (adv.): never / frequently
8. Old (adj.): aged / young
9. Old-fashioned (adj.): modern / ancient
10. Ominous (adj.): fateful / auspicious
11. Omission (n.): addition / default
12. Omit (v.): drop / include
13. Onerous (adj.): easy / demanding
14. One-sided (adj.): biased / balanced
15. Onset (n.): end / start
16. Opacity (n.): density / transparency
17. Opaque (adj.): transparent / clouded
18. Open-air (adj.): outdoor / indoor
19. Open-handed (adj.): tight-fisted / free
20. Opening (n.): crack / closing
21. Openly (adv.): secretly / frankly
22. Open-minded (adj.): impartial / prejudiced
23. Operative (adj.): inoperative / active
24. Opinionated (adj.): biased / open-minded
25. Opponent (n.): ally / antagonist
26. Oppose (v.): support / combat
27. Oppressive (adj.): stuffy / airy
28. Optimistic (adj.): pessimistic / bright
29. Optional (adj.): discretionary / compulsory
30. Orderly (adj.): chaotic / neat
Key
1. abominable
2. annoy
3. annoying
4. careless
5. approved
6. child
7. frequently
8. aged
9. ancient
10. fateful
11. default
12. drop
13. demanding
14. biased
15. start
16. density
17. clouded
18. outdoor
19. free
20. crack
21. frankly
22. impartial
23. active
24. biased
25. antagonist
26. combat
27. stuffy
28. bright
29. discretionary
30. neat
Rating
10 – 15 Correct: Good
16 – 20 Correct: Excellent
21 – 30 Correct: Exceptional