| Word | Definitions | Synonyms |
|---|---|---|
| oscillating | (adjective) having periodic vibrations | Synonyms: oscillatory |
| oscillatory | (adjective) having periodic vibrations | Synonyms: oscillating |
| oscine | (adjective) of or relating to the songbirds | - |
| oscitant | (adjective) showing lack of attention or boredom | Synonyms: drowsy, yawning |