一 心 不 乱(いっしんふらん)

いっしんふらん

na-adjective, noun, adverb

wholeheartedly; single-mindedly

descriptive

1. wholeheartedly; single-mindedly; with undivided attention

Being completely focused on one thing without any distraction; concentrating with one's entire heart and mind.

彼(かれ)は一心不乱(いっしんふらん)に勉強(べんきょう)した。

He studied single-mindedly.

一心不乱(いっしんふらん)に仕事(しごと)に打(う)ち込(こ)む。

To throw oneself wholeheartedly into work.

一心不乱(いっしんふらん)に走(はし)り続(つづ)けた。

I kept running with complete focus.

Etymology

一心(いっしん) (one mind) + 不乱(ふらん) (not distracted)
Literally: "one mind, not scattered"
Originally a Buddhist term describing a meditative state of complete concentration.

Common collocations

一心不乱(いっしんふらん)に取(と)り組(く)む: to work on wholeheartedly
一心不乱(いっしんふらん)に打(う)ち込(こ)む: to devote oneself to
一心不乱(いっしんふらん)に努力(どりょく)する: to make efforts wholeheartedly

Similar words

無我夢中(むがむちゅう): being absorbed in
一途(いちず)に: single-mindedly

Related Words

Related: 無我夢中(むがむちゅう) (being absorbed)

Related: 一途(いちず) (single-mindedly)

Compare: 全集中(ぜんしゅうちゅう) (full concentration)

Compare: 一意専心(いちいせんしん) (single-minded devotion)

general

Added 2026.1.16 18:38 · Revised 2026.10.17 22:28

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