- distinguish
- 1561, from M.Fr. distinguiss-, stem of distinguer, from L. distinguere "to separate between, separate by pricking," from dis- "apart" + -stinguere "to prick." The suffix -ish is due to the influence of many verbs in which it is the equivalent of O.Fr. -iss, ultimately from L. inchoative suffix -iscere (this is also the case in extinguish, admonish, and astonish). The pp. distinguished, with special sense of "famous, celebrated," first recorded 1714.