がい 甲斐 LinksSentence search for 甲斐Sentence search for がいKanji details for 甲 and 斐Edit in JMdict Suffix1. result (that makes an act worthwhile); worth (in doing something); value; effect; use; benefit; availSee also 甲斐 かい, after a noun or the -masu stem of a verb Discussions Log in to talk about this word.