English word ass comes from Proto-Indo-European *ors-, and later Proto-Germanic *arsaz (Arse/ass, anus, buttocks.)
| Dictionary entry | Language | Definition |
|---|---|---|
| *ors- | Proto-Indo-European (ine) | |
| *arsaz | Proto-Germanic (gem-pro) | Arse/ass, anus, buttocks. |
| ærs | Old English (ang) | The arse; the buttocks or anus. |
| ars | Middle English (enm) | |
| arse | English (en) | (chiefly, UK, pejorative, _, slang) A stupid, mean or despicable person.. (dated, _, in, _, New England, current in, _) The buttocks or more specifically, the anus. (slang, intransitive) To be silly, act stupid or mess around. |
| ass | English (en) | (slang) One's self or person, chiefly their body.. (slang) Used in similes to express something bad or unpleasant.. (vulgar, slang) Used after an adjective to indicate extremes or excessiveness.. (vulgar, slang) anus. (vulgar, slang) buttocks. (vulgar, slang, uncountable) sex. |