| Word | Definitions | Synonyms |
|---|---|---|
| omicron | (noun) the 15th letter of the Greek alphabet | - |
| ominousness | (noun) The quality of giving indication of a coming ill; being an evil omen; being threatening, portentous, inauspicious. | - |
| omission | (noun) a mistake resulting from neglect | Synonyms: skip |
| (noun) neglecting to do something; leaving out or passing over something | - | |
| (noun) any process whereby sounds or words are left out of spoken words or phrases | Synonyms: deletion | |
| (noun) something that has been omitted | - |