nonvalid

adjective

non·​val·​id ˌnän-ˈva-ləd 

: not valid : invalid

nonvalid arguments

a nonvalid license

nonvalidity

ˌnän-və-ˈli-də-tē 

-va-

noun

the nonvalidity of the allegations

Synonyms

• baseless
• foundationless
• groundless
• invalid
• unfounded
• unreasonable
• unsubstantiated
• unsupported
• unwarranted

Word History

First Known Use

1803, in the meaning defined above