愉快 (ゆかい)pleasant; delightful; enjoyable

pleasant; delightful; enjoyableadjectival nouns or quasi-adjectives (keiyodoshi), noun (common) (futsuumeishi)

愉快, its kanji, and other words that share them.Open this graph

Kanji in 愉快

不愉快ふゆかいunpleasant; disagreeable
愉しいたのしいenjoyable; fun
愉しげたのしげhappy; cheerful
愉しみたのしみenjoyment; pleasure
愉しむたのしむto enjoy (oneself)
愉快犯ゆかいはんcrime committed for fun; criminal who takes delight in people's reaction to his crimes
愉悦ゆえつjoy; pleasure
愉楽ゆらくpleasure
快適かいてきpleasant; agreeable
明快めいかいclear; clear-cut
快挙かいきょbrilliant achievement; spectacular feat
豪快ごうかいhearty; tremendous
不快ふかいdispleasure; discomfort
軽快けいかいlight (of movements); nimble
快調かいちょうgood (condition); going well

See how 愉快 connects to the rest of Japanese.