noun
usefulness; utility; orderliness; propriety
Almost exclusively used in the negative phrase 益体もない (やくたいもない), meaning 'useless', 'good-for-nothing', or 'disorderly'. The standalone noun is rare.
See also: 益体もない
彼は益体もないことばかり言っている。
He's always saying useless things.
そんな益体もない計画はやめたほうがいい。
You'd better give up such a pointless plan.
The exact derivation is uncertain. The kanji 益 (benefit) and 体 (form/appearance) suggest 'beneficial form', but the word is now fossilized in the negative phrase 益体もない.