Directions: Identify each pair of words as synonynms or antonyms. 1. sweet/sour 2. frigid/scalding 3. optimistic/hopeful 4. plentiful/barren 5. hectic/frantic 6. bright/dull 7. ancient/aged 8. ally/enemy 9. meticulous/careless 10. numerous/many 11. chuckle/giggle 12. strange/unusual