| term | pronunciation | English |
|---|
| 愉快 | ゆかい | pleasant, happy |
| 快晴 | かいせい | good weather |
| 軽快な | けいかいな | light, nimble, sprightly, jaunty |
| 快適 | かいてき | pleasant, agreeable, comfortable |
| 不快 | ふかい | unpleasant, displeasure, discomfort |
| 不愉快 | ふゆかい | discomfort, unpleasantness, disagreeableness, unhappiness |
| 快い | こころよい | pleasant, agreeable |
| 快哉 | かいさい | joy, exultation |
| 快哉を叫ぶ | かいさいをさけぶ | to shout with exultation, to shout for joy |
| 快挙 | かいきょ | brilliant achievement |
| 快方に赴く | かいほうにおもむく | to improve, to get better, to convalesce |
| 快調 | かいちょう | harmony, excellent condition |
| 快諾 | かいだく | ready consent |
| 快速 | かいそく | high speed, celerity, mobility, express (train that bypasses many stations) |
| 愉快犯 | ゆかいはん | criminal who takes delight in people's reaction to his crimes |
| 明快 | めいかい | clarion, clarity |
| 欣快 | きんかい | pleasant, delightful |
| 爽快 | そうかい | refreshing, exhilarating |
| 豪快 | ごうかい | hearty, exciting, stirring, lively, heroic, largehearted, splendid |