やく 約する Play audio LinksSentence search for 約するSentence search for やくするKanji details for 約Edit in JMdict Suru verb - special class, Transitive verb1. to promiseSuru verb - special class, Transitive verb2. to abridge; to simplify; to shortenSuru verb - special class, Transitive verb3. to reduceMathematics Discussions Log in to talk about this word.