fortify

(v) make strong or stronger
- This exercise will strengthen your upper body
- strengthen the relations between the two countries
beef up, strengthen,
(v) enclose by or as if by a fortification fort,
(v) 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
arm, gird, build up,
(v) add nutrients to
- fortified milk
(v) add alcohol to (beverages)
- the punch is spiked!
lace, spike,

beef up strengthen fort arm gird build up lace spike

weaken disarm demilitarise demilitarize

forties