増やし|ふやしfuyashi[2]nakadaka (mid-high)

1. nounincrease

• Synonym増加ぞうかNeutralThe most common word for an increase in number or amount, in daily life and news reports, as in 「人口増加」. 「増やし」 is a verb turned noun and rarely used alone.
• Synonym増量ぞうりょうNeutralAn increase in amount or volume rather than number, used mostly in product promotions, as in 「増量中」.
• Related加増かぞうWrittenWritten/formal: an increase in stipend or territory, a historical term rarely used today.
• Related累加るいかWrittenWritten/formal: adding the same amount repeatedly, one after another; leans mathematical.
• Antonym減らしNeutralThe opposite of 「増やし」: a decrease. Not an established word; normally say 「減らすこと」.

「増加」 or 「増やすこと」 is the usual way to say an increase; 「増やし」 is a verb turned noun and rarely stands alone. 「増量」 is for increasing the amount of a product. 「加増」 and 「累加」 are written terms for historical stipend increases and successive addition.

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

1. ある物ものの量りょうや数かずを多おおくすること。