1. Proven false or incorrect
   "The theory was invalidated by new evidence"
    
2. (law) rendered void or without legal force
   "The invalidated agreement was no longer enforceable";
   - nullified

1. Declare invalid
   "The court invalidated the contract";
   - annul, quash, void, avoid, nullify
    
2. Take away the legal force of or render ineffective
   "invalidate a contract";
   - void, vitiate
    
3. Make invalid for use
   "invalidate cheques or tickets";
   - cancel

See also: invalid

Type of: alter, cancel, change, contradict, mark, modify, negate, score, strike down

Antonym: validate