しょう 証す Show inflections LinksSentence search for 証すSentence search for しょうすKanji details for 証Edit in JMdict Godan verb with 'su' ending, Transitive verb1. to prove; to verifySee also 証するGodan verb with 'su' ending, Transitive verb2. to guarantee; to promise Discussions Log in to talk about this word.