Refers to a feeling of comfort, satisfaction, or pleasantness. Often used in compounds like 快感 (pleasant sensation) or 快適 (comfortable).
温泉に入ると、心身ともに快を感じる。
When I soak in a hot spring, I feel pleasure both physically and mentally.
rapid train (abbreviation)
Abbreviation of 快速 (rapid train). Used in train service names like 快特 (rapid limited express). Not used as a standalone word for 'rapid'.
「快特」の「快」は快速の略です。
The 快 in 快特 is an abbreviation of 快速 (rapid).
快楽 refers to indulgent or hedonistic pleasure, whereas 快 is a plainer, more general term for a pleasant feeling.
不快 means an unpleasant or uncomfortable feeling, the direct opposite of the pleasant feeling denoted by 快.
快適 is a na-adjective meaning 'comfortable', while 快 is a noun naming the feeling of pleasure itself, not a description of a thing.
快速 is the full word for a rapid train or high speed, while 快 is only its shortened form used inside train service names like 快特.
pleasant; comfortable; agreeable
displeasure; discomfort; unpleasantness · indisposition; ailment
pleasant feeling; pleasure
pleasure; enjoyment; sensual delight · supreme pleasure (Buddhism); liberation from earthly desires
pleasant; enjoyable; cheerful
The kanji 快 carries meanings of 'pleasant' and 'comfortable'. The abbreviation sense derives from 快速 (rapid).
brilliant achievement; spectacular feat
light; nimble; springy · light-hearted; cheerful; casual · improving; recovery; convalescence
clear weather; cloudless weather; fine weather
clear; lucid; unequivocal
exhilarating; thrilling; intensely pleasurable
sweeping victory; easy win
ready consent; willing agreement
pleasant sleep; good sleep; sleeping well
cheerful; lively; lighthearted
complete recovery; full recovery of health
good condition; going well; smooth
recovery; convalescence; improvement (of a condition)
fast running; speedy sailing; brisk movement
recovery from illness
recovery; convalescence
nice guy; pleasant fellow; good-natured man
nimble-footed; quick on one's feet; fast running legs
emotionally uplifting; stirring
pleasure; delight; pleasant event
splendid work; masterpiece
comfortable bowel movement; regular bowel movement
sharp sword