| Word | Definitions | Synonyms |
|---|---|---|
| onomancer | (noun) one who practices onomancy | - |
| onomancy | (noun) divination by the letters of a name | - |
| onomasticon | (noun) a list of proper nouns naming persons or places | - |
| onomastics | (noun) the branch of lexicology that studies the forms and origins of proper names | - |
| onomatomania | (noun) obsession with a particular word which the person uses repeatedly or which intrudes into consciousness | - |
| onomatopoeia | (noun) using words that imitate the sound they denote | - |