energize UK /ˈɛnəd͡ʒaɪz/US /ˈɛnɚd͡ʒaɪz/ verb3 •To invigorate; to make energetic. •To supply with energy, especially electricity; to turn on power to (something).Whenever we energize that circuit we blow a fuse. •(no longer used) To use strength in action; to act or operate with force or vigor; to act in producing an effect.Of all men it is true that they feel and energize first, they reflect and judge afterwards. — 1881 formsenergized · energizing · energizes