不ふ変へん費ひ用よう

Meanings

1

noun

Economic term for costs that do not vary with output level, such as rent or depreciation. Synonymous with 固定費用.

固こ定てい費ひ用よう
Synonym; 固定費用 is more common in modern business contexts, while 不変費用 is a slightly more formal or academic term.
変へん動どう費ひ用よう
Antonym; costs that vary with production volume.

Compound of 不変 (unchanging) + 費用 (cost). A straightforward kanji compound with no unusual historical derivation.