Overview of noun invalid

The noun invalid has 1 sense

• invalid, shut-in -- (someone who is incapacitated by a chronic illness or injury)

Overview of verb invalid

The verb invalid has 2 senses

• invalid -- (force to retire, remove from active duty, as of firemen)


• disable, invalid, incapacitate, handicap -- (injure permanently; "He was disabled in a car accident")

Overview of adj invalid

The adj invalid has 2 senses

• invalid -- (having no cogency or legal force; "invalid reasoning"; "an invalid driver's license")


• invalid -- (no longer valid; "the license is invalid")