Denshi Jisho — Online Japanese dictionary

婚約 こんやく engagement; betrothal
Common word, Noun, Suru verb, No-adjective 
婚約 こんやくしゃ fiance; fiancee
Common word, Noun 
婚約破棄 こんやくはき breaking off an engagement
Noun 
婚約指輪 こんやくゆびわ engagement ring
Noun 

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