Denshi Jisho — Online Japanese dictionary

開園 かいえん opening, either for the day or a "grand opening" (e.g. theme park, botanical garden etc.)
Noun, Suru verb 
開宴 かいえん opening of a banquet; opening of a wedding reception
Noun 
介音 かいおん medial; final-head (glide before the center vowel in Chinese)
Noun 
回音 かいおん turn (melodic ornament); gruppetto
Noun 
快音 かいおん clear sound
Noun 
開音 かいおん long "o" vowel arising from combination of the "a" and "u" sounds
Noun 
介殻 かいかく sea shell
Noun 
快濶 かいかつ cheerful; lively; lighthearted
Na-adjective 
快闊 かいかつ cheerful; lively; lighthearted
Na-adjective 
開豁 かいかつ open; openminded
Na-adjective, Noun 
会舘 かいかん meeting hall; assembly hall
Out-dated kanji, Noun 
快漢 かいかん pleasant fellow
Noun 
怪漢 かいかん suspicious man
Noun 
挂冠 かいかん resigning from a government post
Noun, Suru verb, Obscure term 
海関 かいかん maritime customs taxes
Noun 
開巻 かいかん opening (part) of a book
Noun, Suru verb 
開管 かいかん open pipe
Noun 
開缶 かいかん opening a can
Noun, Suru verb 
開学 かいがく establishment of a university
Noun, Suru verb 
貝殻 かいがら shell
Noun 
開眼 かいがん enlightenment; spiritual awakening; opening one's eyes to the truth
Noun, Suru verb 
開渠 かいきょ open ditch; open channel; open conduit; open culvert
Noun 
皆勤 かいきん perfect attendance
Noun, Suru verb 
開襟 かいきん open-necked (shirt)
Noun, Suru verb, No-adjective 
怪魚 かいぎょ mysterious fish; strange fish
Noun 
海魚 かいぎょ ocean fish; saltwater fish
Noun 

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