list of synonyms of word invalidate

• annul
• quash
• void
• avoid
• nullify
• cancel (generic term)
• strike down (generic term)
• validate (antonym)

• cancel
• score (generic term)
• mark (generic term)

• nullify
• negate (generic term)
• contradict (generic term)
• validate (antonym)

• void
• vitiate
• change (generic term)
• alter (generic term)
• modify (generic term)
• validate (antonym)