Invalid
Invalid adjective - Having no legal or binding force.
Usage example: the treaty is invalid once one side violates it
Valid
Valid adjective - According to the rules of logic.
Usage example: your argument isn't valid because you're taking what should be the conclusion and using it as a premise
Nearby Words: validity, validation
Both words in one sentence
-
The Kelpfroths were horrible neighbors because they chronically complained about Michael and his family, for reasons both valid and invalid.
- And since the judiciary decides what laws mean—including the Constitution and statutes—and the Supreme Court is the highest organ of the judiciary, the Court gets final say on what laws are valid and invalid.
Source: Word of Dante -
The protagonist is an invalid who wants to be an astronaut and passes himself off as "valid" by borrowing genetic material from a "valid" person who is wheelchair-bound.
Source: Dream-Crushing Handicap
Cite this Source
Valid and Invalid. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/invalid/valid
Invalid & Valid. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/invalid/valid>.
Valid or Invalid. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/invalid/valid.
Google Ngram Viewer shows how "invalid" and "valid" have occurred on timeline