1. [ verb ] make strong or stronger
Synonyms: strengthen beef_up

"This exercise will strengthen your upper body" "strengthen the relations between the two countries"

Related terms: weaken change reinforce confirm brace buttress vitalize substantiate restrengthen batten batten undergird ruggedise strengthener fortification strengthen
2. [ verb ] (military) prepare oneself for a military confrontation
Synonyms: arm build_up gird

"The U.S. is girding for a conflict in the Middle East" "troops are building up on the Iraqui border"

Related terms: disarm rearm forearm weapon garrison fortification
3. [ verb ] add nutrients to; as of foods

"fortified milk"

Related terms: add cooking
4. [ verb ] enclose by or as if by a fortification
Synonyms: fort
Related terms: enclose trench fortress
5. [ verb ] add alcohol beverages
Synonyms: lace spike
Related terms: change cooking
Similar spelling:   fortifying