かい 介す Show inflections LinksSentence search for 介すSentence search for かいすKanji details for 介Edit in JMdict Godan verb with 'su' ending, Su verb - precursor to the modern suru, Transitive verb1. to use as an intermediary; to mediate; to assistSee also 介するGodan verb with 'su' ending, Su verb - precursor to the modern suru, Transitive verb2. to worry; to mind; to careSee also 介する Discussions Log in to talk about this word.