快 かい Meanings Noun pleasure; delight; enjoyment rapid (train) See also: 快速 (かいそく). See also: 快特 (かいとく). Kanji 快 pleasant. Read as カイ. Words containing 快 快適 (かいてき) pleasant 快速 (かいそく) high speed 不快 (ふかい) displeasure And 104 more. Jinuma: Japanese Dictionary · Word lists