WordReference Random House Unabridged Dictionary of American English © 2026
ass•back•wards
(as′bak′wərdz),USA pronunciation adv. [Slang](sometimes vulgar).
- Slang Termsin an order or way reverse from the usual:You've sewn the sleeve on assbackwards.
- Slang Termsin a manner incongruously or preposterously counter to what is customary, probable, or feasible:The plan fell apart because everything leading up to it was handled assbackwards.
- ass2 + backwards 1935–40
'assbackwards' also found in these entries (note: many are not synonyms or translations):