English word unique comes from Proto-Indo-European *yo-, Latin -icum, Proto-Indo-European *oynolos, and later Proto-Italic *oinos (One.)
| Dictionary entry | Language | Definition |
|---|---|---|
| *yo- | Proto-Indo-European (ine) | |
| -icum | Latin (lat) | |
| *oynolos | Proto-Indo-European (ine) | |
| *óywos | Proto-Indo-European (ine) | |
| *oinos | Proto-Italic (itc-pro) | One. |
| oinos | Old Latin (itc-ola) | (cardinal) one. |
| unus | Latin (lat) | Alone. One, single (cardinal) one; 1 (Medieval Latin) a, an. |
| unicus | Latin (lat) | Only, sole, single. Uncommon. Unique. |
| unique | French (fr) | Only. Unique. |
| unique | English (en) | (proscribed) Of a rare quality, unusual.. (uncomparable) Being the only one of its kind; unequaled, unparalleled or unmatched.. Of a feature, such that only one holder has it.. Particular, characteristic. A thing without a like; something unequalled or unparallelled. |