快い

• Reading: こころよい
• Romaji: kokoroyoi
• Kanji breakdown: 快 (kai/kokoroyoi) — pleasant, cheerful, comfortable
• Pronunciation: /ko.ko.ɾo.jo.i/

Meaning

Pleasant; agreeable; comfortable; refreshing. Describes a feeling of genuine satisfaction or agreeableness.

An i-adjective describing something that brings a feeling of genuine pleasure or comfort. Can describe physical sensations (a refreshing wind), emotions (pleasant feeling), or a person's willingness to help (快く引き受ける — to willingly accept). The adverb form 快く (kokoroyoku) is particularly common and means 'willingly, gladly, readily.' More literary than 気持ちいい but used in everyday speech, especially in the adverb form.

Examples

1. 彼は快く申し出を引き受けてくれた。 He willingly agreed to take on the offer.
2. 快い疲労感を感じながら帰路についた。 I headed home feeling a pleasant sense of tiredness.
3. 朝の快い空気を吸い込んだ。 I breathed in the refreshing morning air.

Usage Guide

Context: daily life, interpersonal, nature

Tone: pleasant

Origin & History

From 快 (kai/kokoroyoi, pleasant/cheerful). The kanji 快 combines 忄 (heart radical) and 夬 (decisive), suggesting a heart that is clear and unburdened — free of discomfort or hesitation.

Cultural Context

Era: Classical

Generation: All ages

Social background: Universal