How to say "depreciation" in Japanese

• 下落げらくCommon
  noun, suru verb, intransitive verbDepreciation as a fall in value or price — a currency, asset, or market declining or slumping rather than an accounting entry. Choose it where English 'depreciation' could be replaced by 'fall' or 'decline'.
  株式市場かぶしきしじょうは今日きょう、下落げらくした。↗

  The stock market has dropped today.
• 減価償却げんかしょうきゃくCommon
  nounThe accounting term: depreciation of fixed assets written off over their useful life in bookkeeping and tax contexts. If 'depreciation' appears in a financial statement or tax discussion, this is the word.
• 低減ていげんCommon
  noun, suru verb, transitive verb, intransitive verbReally a general word for decrease or reduction in level, amount, or degree; its 'depreciation' gloss is marginal. Seldom the word you want for 'depreciation' — neither falling market values nor the accounting sense.
  産婦人科医さんふじんかいが減へっているのは出生数しゅっしょうすうの減少げんしょうで医療いりょうニーズが低減ていげんしたのを反映はんえいしている。↗

  The reduction in obstetricians and gynecologists is a reflection of the decrease in births, thus reducing need for medical care.
• 償却しょうきゃくCommon
  suru verb, no-adjective, transitive verbThe write-off side of depreciation: essentially the shorter accounting term contained in 減価償却, used for writing off an asset's value. Not a word for prices or values falling in the market.

Use 下落 for depreciation as a fall in market value, 減価償却 (or its shorter counterpart 償却) for the accounting write-off of assets, and treat 低減 as a general reduction word whose 'depreciation' gloss is marginal.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 下落げらくdepreciation
• 減価償却げんかしょうきゃくdepreciation
• 低減ていげんdecrease
• 減価げんかprice reduction
• 償却しょうきゃくdepreciation
• 下げさげdepreciation