- sound; just; well-founded: a valid reason.
- producing the desired result; effective: a valid antidote for gloom.
- having force, weight, or cogency; authoritative.
- legally sound, effective, or binding; having legal force: a valid contract.
- Logic. (of an argument) so constructed that if the premises are jointly asserted, the conclusion cannot be denied without contradiction.
- Archaic. robust; well; healthy.
Origin of valid
SynonymsSee more synonyms on Thesaurus.com
Examples from the Web for valid
Meanwhile, Marino promises “radical changes” and vows to check every contract the city has—to see if they are valid.The Mayor Who Took Down the Mafia That Ruined Rome
Barbie Latza Nadeau
December 6, 2014
And that would be a valid, if pointless, thing for me to do.Untruth and Consequences in Ferguson
October 25, 2014
Literary pedigree is or should be a valid concern for any writer or for any critic considering that writer.Compliments Are Nice, but Enough With the Cormac McCarthy Comparisons
October 21, 2014
Does Kelly Johana have a valid excuse for attending the party with over 60 youth between the ages of 13 and 20?Colombian Beauty Queen Arrested for Running Child Prostitution Ring
October 17, 2014
Team Affleck needs to acknowledge that some criticisms are valid.After Maher-Affleck, We Need an Honest—and Calm—Dialogue on Islam
October 10, 2014
This would be his own excuse, and does it not seem a valid one?The Macdermots of Ballycloran
Here are the two elements of a valid appointment, and they must concur.The Electoral Votes of 1876
David Dudley Field
There was, however, one real and valid reason for this inveterate jealousy.Lord Kilgobbin
You regard it then as authentic—as a good and valid instrument?Roland Cashel
Charles James Lever
Of course it was a valid excuse, but it annoyed me to have her decline.The Crimson Tide
Robert W. Chambers
- having some foundation; based on truth
- legally acceptablea valid licence
- having legal force; effective
- having legal authority; binding
- having some force or cogencya valid point in a debate
- logic (of an inference or argument) having premises and conclusion so related that whenever the former are true the latter must also be true, esp (formally valid) when the inference is justified by the form of the premises and conclusion alone. Thus Tom is a bachelor; therefore Tom is unmarried is valid but not formally so, while today is hot and dry; therefore today is hot is formally validCompare invalid 2 (def. 2)
- archaic healthy or strong
Word Origin and History for valid
1570s, "having force in law, legally binding," from Middle French valide, from Latin validus "strong, effective," from valere "be strong" (see valiant). The meaning "supported by facts or authority" is first recorded 1640s.