energetic
Cross references: 1. vigorous en.er.get.ic \.en-*r-'jet-ik\ \-i-k(*-)le-\ aj [Gk energe-tikos, fr. energein to be active, fr. energos] 1: marked by energy : STRENUOUS 2: operating with vigor or effect 3: of or relating to energy {~ equation} - en.er.get.i.cal.ly av