stimulate

Synonyms: activate animate arouse build a fire under commove dynamize elate encourage energize enliven exhilarate fan fire fire up foment foster galvanize get one going get one started goad grab hook impel incite inflame innervate innerve inspire instigate jazz juice key up motivate move perk pique prod prompt quicken rouse send set up spark spirit spur steam up stir up support trigger turn on urge vitalize vivify wake up whet work up

Antonyms: calm depress discourage