予よ約やく者しゃMeaningsNoun1. person who makes a booking or reservation; booker; subscriber (e.g. to a magazine)Kanji used予in advance約promise者someoneComposed of予よ約やくreservation; appointment; booking; advance order; contract; subscription; pledge; programming (e.g. a device); setting (e.g. a timer)Noun者しゃperson; -erSuffix