あ し合う Show inflections LinksSentence search for し合うSentence search for しあうSentence search for 為合うKanji details for 合Edit in JMdict Godan verb with 'u' ending, Transitive verb1. to do togetherUsually written using kana alone, See also するOther forms為合う 【しあう】Notes為合う: Rarely-used kanji form. Discussions Log in to talk about this word.