弱める|よわめるyowameru[3]nakadaka (mid-high)

JLPT N1approx.Common
Definitions
  1. ichidan verb, transitive verbto weaken
    大おおきなかしわの木きが風かぜの力ちからを弱よわめている。↗
    The big oak tree breaks the force of the wind.
Conjugation
Dictionary form弱める(よわめる)
Polite (masu)弱めます(よわめます)
Negative (nai)弱めない(よわめない)
polite (masen)弱めません(よわめません)
classical zu / nu弱めず・弱めぬ(よわめず・よわめぬ)
Past (ta)弱めた(よわめた)
polite (mashita)弱めました(よわめました)
Past negative (nakatta)弱めなかった(よわめなかった)
polite (masen deshita)弱めませんでした(よわめませんでした)
Te form弱めて(よわめて)
Potential弱められる(よわめられる)
Passive弱められる(よわめられる)
Causative弱めさせる(よわめさせる)
Causative passive弱めさせられる(よわめさせられる)
Conditional (ba)弱めれば(よわめれば)
tara弱めたら(よわめたら)
Volitional弱めよう(よわめよう)
polite (mashou)弱めましょう(よわめましょう)
Imperative弱めろ(よわめろ)

Common forms generated by rule; see the senses for honorific or irregular usage.

Transitive / intransitive pair
transitive弱めるよわめる⇄intransitive弱まるよわまる
風かぜが弱よわまる
彼かれが力ちからを弱よわめる
弱まる focuses on the event or resulting state, as in 風が弱まる; 弱める foregrounds the agent acting on something, as in 彼が力を弱める.

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

Synonyms & antonyms
  • Synonym和らげるやわらげるNeutralSoftens or eases something unpleasant — pain, tension, the mood; 「弱める」 is about reducing the strength or intensity of something.
  • Synonym弱体化じゃくたいかNeutralA noun for an organization or system losing strength, as in 「チームの弱体化」; 「弱める」 is for actively weakening something.
  • Related鈍らすにぶらすNeutralMakes something dull or sluggish — a blade, or faculties like judgment, as in 「判断を鈍らす」; 「弱める」 focuses on lowering intensity.
  • Related緩めるゆるめるNeutralLoosens or relaxes something — a grip, guard, or rules; 「弱める」 is about reducing the strength or intensity of something.
  • Related損なうそこなうNeutralHarms or spoils something valuable such as health or reputation, as in 「健康を損なう」; 「弱める」 focuses on reducing intensity.
  • RelatedそぐNeutralDampens drive or interest, as in 「意欲を削ぐ」; 「弱める」 is about reducing the intensity or strength of something.
  • Related弱化じゃっかWrittenWritten/formal prose for weakening or growing weaker; 「弱める」 is the more colloquial choice.
  • Antonym強めるつよめるNeutralAntonym: makes something stronger or more intense, the opposite of 「弱める」 on the strong–weak scale.

To reduce the strength or intensity of something — fire, force, light — use 「弱める」, as in 「火を弱める」. For a weakened organization use 「弱体化」; dampened motivation 「削ぐ」; relaxing rules or effort 「緩める」; easing pain 「和らげる」. The antonym is 「強める」.

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

Japanese definitions
  1. 弱よわくする。
Kanji in this word
English equivalents

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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