1. Someone who is incapacitated by a chronic illness or injury
   - shut-in

1. Force to retire, remove from active duty, as of firemen 
2. Injure permanently
   - disable, incapacitate, handicap

1. Having no cogency or legal force
   "invalid reasoning"; "an invalid driver's licence" 
2. No longer valid
   "the licence is invalid"

Derived forms: invalids, invaliding, invalided

See also: bad, expired, fallacious, false, illegitimate, invalidated, invalidness, null, nullified, sophistic, sophistical, uncollectible, unsound, void

Type of: diseased person, injure, remove, sick person, sufferer, wound

Antonym: valid

Part of: homebound

Encyclopedia: Invalid

• noncurrent
• noncyclic
• noncyclical
• nondeductible
• nondelivery
• nondenominational
• nondepository financial institution
• nondescript
• nondevelopment
• nondigestible
• nondirectional antenna
• nondiscretionary trust
• nondisjunction
• nondisposable
• nondrinker
• nondriver
• none
• nonechoic
• noneffective
• noneffervescent
• nonelastic
• nonelected
• nonelective
• nonelectric
• nonelectrical