Word Type

Verb

Noun

Adjective

Adjective

The word "invalid" can be used as verb, noun, adjective and adjective.

Word Relationships

Opposites (Antonyms)

valid valid

Capable Of

read stay at home

Derived Terms

fabulous invalid invalid carriage invalid chair invalid out invalid stout invalidhood invalidish invalidism invalidity invalidly invalidness

Derived From

valid

Etymologically Related To

in

Context

british offensive

Broader Terms (Hypernyms)

diseased person injure remove sick person sufferer wound

Type Of (IsA)

sick person

Manner Of

remove

Related Terms

acceptable affect appropriate armed forces bed correct disability disease duty exempt home illegitimate illness injury invalid carriage true valid

Similar Terms

bad expired expired fallacious fallacious false false illegitimate invalidated invalidated null null nullified sophistic sophistical sophistical spurious spurious uncollectible uncollectible unsound void

Synonym Network

disable disallowed nonvalid

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.