| term | pronunciation | English |
|---|
| 増減 | ぞうげん | increase and decrease, fluctuation |
| 減らす | へらす | to abate, to decrease, to diminish, to shorten |
| 減る | へる | to decrease (in size or number), to diminish |
| 削減 | さくげん | cut, reduction, curtailment |
| 加減抵抗器 | かげんていこうき | rheostat |
| 減価償却 | げんかしょうきゃく | depreciation |
| 減俸 | げんぽう | salary reduction, salary cut |
| 減反 | げんたん | reduction (of crop size), reduction of acreage (under cultivation) |
| 減収 | げんしゅう | fall, decrease (in income) |
| 減少 | げんしょう | decrease, reduction, decline |
| 減産 | げんさん | reduction in production |
| 減益 | げんえき | decrease in profits |
| 減税 | げんぜい | tax reduction |
| 減衰 | げんすい | attenuation, damping, decay |
| 減衰器 | げんすいき | attenuator |
| 減速 | げんそく | deceleration |
| 減量 | げんりょう | loss in quantity |
| 減額 | げんがく | reduction, diminution, abatement |
| 漸減 | ぜんげん | gradual decrease, decline |
| 節減 | せつげん | retrenchment, curtailment, economy |
| 軽減 | けいげん | abatement, reduction |
| 逓減 | ていげん | successive diminution |