Valid antonyms | adjectives

Antonyms for Valid as a Adjective

• invalid

  right
• illegitimate

  right
• unsound

  right
• false

  right
• fake

  right
• unreal
• wrong
• counterfeit
• illegal
• unlawful
• unacceptable
• unconvincing
• void
• fallacious
• weak
• illogical
• unreasonable
• groundless
• unfounded
• improbable
• unlikely
• evil
• unreliable
• untrustworthy
• illicit
• sophistic
• specious
• absurd
• 

  crazy
• insane
• loony
• nonsensical
• nutty
• preposterous
• unsubstantiated
• incoherent
• inconsequent
• inconsequential
• irrational
• nonrational
• nonvalid
• uninformed
• unjustified
• misleading
• cockeyed
• daffy
• fatuous
• half-baked
• half-witted
• harebrained