strengthen, beef up, fortify -- (make strong or stronger; "This exercise will strengthen your upper body"; "strengthen the relations between the two countries")
fortify, fort -- (enclose by or as if by a fortification)
arm, build up, fortify, gird -- (prepare oneself for a military confrontation; "The U.S. is girding for a conflict in the Middle East"; "troops are building up on the Iraqi border")
fortify -- (add nutrients to; "fortified milk")
spike, lace, fortify -- (add alcohol to (beverages); "the punch is spiked!")
(Sound)
