鈍らす|にぶらすniburasu

Common
Definitions
  1. godan verb, transitive verbto blunt; to dull; to weaken
    我々われわれは流感りゅうかんの広ひろがる速度そくどを鈍にぶらすことができるだろうか。↗
    Can we check the rapid spread of the 'flu?
Conjugation
Dictionary form鈍らす(にぶらす)
Polite (masu)鈍らします(にぶらします)
Negative (nai)鈍らさない(にぶらさない)
polite (masen)鈍らしません(にぶらしません)
classical zu / nu鈍らさず・鈍らさぬ(にぶらさず・にぶらさぬ)
Past (ta)鈍らした(にぶらした)
polite (mashita)鈍らしました(にぶらしました)
Past negative (nakatta)鈍らさなかった(にぶらさなかった)
polite (masen deshita)鈍らしませんでした(にぶらしませんでした)
Te form鈍らして(にぶらして)
Potential鈍らせる(にぶらせる)
Passive鈍らされる(にぶらされる)
Causative鈍らさせる(にぶらさせる)
Causative passive鈍らさせられる(にぶらさせられる)
Conditional (ba)鈍らせば(にぶらせば)
tara鈍らしたら(にぶらしたら)
Volitional鈍らそう(にぶらそう)
polite (mashou)鈍らしましょう(にぶらしましょう)
Imperative鈍らせ(にぶらせ)

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

Transitive / intransitive pair
transitive鈍らすにぶらす⇄intransitive鈍るにぶる
感覚かんかくを鈍にぶらす
鈍る focuses on the event or resulting state, as in 包丁が鈍る; 鈍らす foregrounds the agent acting on something, as in 感覚を鈍らす.

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

Synonyms & antonyms
  • Related緩めるゆるめるNeutralNeutral word for loosening or relaxing: it eases tension, effort, rules or restrictions, not something that dulls the senses.
  • Related和らげるやわらげるNeutralSoftens or relieves, making pain and tension milder and gentler; it does not make the senses dull.
  • Related弱めるよわめるNeutralEveryday word for weakening: it makes strength or degree lower in general, without the nuance of dulling a blade or the senses.
  • RelatedそぐWrittenWritten register: to chip away at or dampen; most often 「やる気を削ぐ」, focusing on sapping drive and enthusiasm rather than dulling the senses.
  • Antonym研ぐとぐNeutralSharpens a blade on a whetstone — the exact opposite of 「鈍らす」, which makes an edge dull.
  • Antonym鋭くするNeutralPlain, ordinary way to say make something sharp or keen; it stands opposite to 「鈍らす」, which dulls.

Use 「鈍らす」 to dull a blade or dull the senses and judgment, as in 「決心を鈍らす」; the form 「鈍らせる」 is more common. For sapping drive use 「削ぐ」, for general weakening 「弱める」; 「研ぐ」 and 「鋭くする」 are the opposites.

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

Japanese definitions
  1. 刃物はものの先端せんたんや切れ味きれあじを悪わるくする。また、感覚かんかくや意識いしきなどの働はたらきを弱よわめる。
Kanji in this word
English equivalents

Say it right, write it right

Core lookup works fully offline, with cloud pronunciation and one-tap save & review. Free, no sign-up.

Free downloadWindowsFree downloadmacOSDownload on the App StoreGet it on Google Play
MobileiOS / Android

Android

QR code for the Google Play pageGet it on Google Play

Scan it with your Android phone to install, or search for “Tomoshi” on Google Play.

iOS

QR code for the App Store pageDownload on the App Store

Scan it with your iPhone camera to install, or search for “Tomoshi” in the App Store.

Install the browser extensionLook words up on any web page · Chrome / Edge / Safari

Screenshot of a Tomoshi lookup resultScreenshot of Tomoshi lookup results on a phone

Windows macOS Chrome / Edge / Safari extension iOS / Android