list of synonyms of word fortify

• strengthen
• beef up
• change (generic term)
• alter (generic term)
• modify (generic term)
• weaken (antonym)

• fort
• enclose (generic term)
• close in (generic term)
• inclose (generic term)
• shut in (generic term)

• arm
• build up
• gird
• disarm (antonym)

• add (generic term)

• spike
• lace
• change (generic term)
• alter (generic term)
• modify (generic term)