Synonyms of 'invalid'
having no legal forceThe trial was stopped and the results declared invalid.
null and void,
void, , , ,
The elections were declared void by the former military ruler.
The mine has been inoperative since May last year.
The Stamp Act of 1765 was rendered nugatory by colonial resistance.
(of an argument, result, etc.) not valid because it has been based on a mistakeThose arguments are rendered invalid by the hard facts.
The allegations were totally unfounded.
This resulted in false information being entered.
The allegations were completely untrue.
his completely illogical arguments
an irrational fear of science
The thinking is muddled and fundamentally unsound.
The government has described the reports as completely baseless.
Their argument is fallacious.
He claimed the charges against him were untenable.
Copyright © 2016 by HarperCollins Publishers. All rights reserved.
in the sense of ailing
unwell or unsuccessful over a long periodI stopped working to care for my ailing mother.
in the sense of baseless
not based on factThe government has described the reports as completely baseless.
See related content
Video: pronunciation of 'invalid'
Thesaurus for invalid from the Collins English Thesaurus