abettor actor actuator agent ancestors animator apprentice architect artificer artist author begetter beginner builder cajoler catalyst causer coax coaxer conceiver constructor craftsman creator designer deviser discoverer doer effector encourager energizer engenderer engineer executant executor executrix fabricator father firer founder gadfly galvanizer generator grower impeller inaugurator inducer industrialist initiator inspirer instigator institutor introducer inventor journeyman maker manufacturer master master craftsman medium mother mover moving spirit operant operative operator organizer originator parent past master performer perpetrator persuader planner pleader practitioner precursor primum mobile producer prompter raiser realizer shaper sire smith spark spark plug sparker stimulator subject tempter wheedler worker wright