1. Make strong or stronger
   "This exercise will fortify your upper body";
   - strengthen, beef up [informal]
    
2. Enclose by or as if by a fortification
   "The army fortified the hill with sandbags";
   - fort
    
3. Prepare oneself for a military confrontation
   "troops are fortifying on the Iraqi border";
   - arm, build up, gird
    
4. (cooking) add nutrients to
   "fortified milk"
    
5. Add alcohol to a drink to for strength or flavour
   "the punch is fortifyd with rum";
   - lace
    
6. Strengthen wine by adding brandy or other spirits during fermentation
   "Port and sherry are fortifyd wines"

Derived forms: fortified, fortifying, fortifies

Type of: add, alter, change, close in, enclose, fix, gear up, inclose, modify, prepare, ready, set, set up, shut in

Antonym: weaken

Encyclopedia: Fortify