noun
Refers to an error or failed attempt, often implying a slip or botched job. Similar to 仕損じ (しそんじ), but 仕損ない is slightly more colloquial.
See also: 仕損じ (しそんじ)
大事なプレゼンで仕損ないをしてしまった。
I made a blunder during the important presentation.
この書類は仕損ないだらけ
This document is full of mistakes.
仕損じ is a near-synonym with a slightly more formal or literary feel. 仕損ない is more common in everyday speech.
失敗 is the general word for failure or mistake, while 仕損ない emphasizes a botched action or slip.
Compound of 仕 (し, continuative form of する 'to do') + 損ない (そこない, noun form of 損なう 'to fail, to spoil'). Literally 'doing-failure'.