The Collaborative International Dictionary of English v.0.48:
Reinvigorate \Re`in*vig"or*ate\ (-v?g"?r*?t), v. t. To invigorate anew. [1913 Webster]WordNet (r) 3.0 (2006):
reinvigorate v 1: impart vigor, strength, or vitality to; "Exercise is invigorating" [syn: invigorate, reinvigorate]