WordNet sense 1 (heighten or intensify):

animate, enliven, exalt, invigorate, animate

WordNet sense 2 (urge on or encourage especially by shouts):

barrack, cheer, exhort, urge, pep up, urge on

WordNet sense 3 (serve as the inciting cause of):

instigate, prompt

WordNet sense 4 (fill with revolutionary ideas):

revolutionize, revolutionise

WordNet sense 5 (draw in (air)):

inhale, breathe in