Invalid and Logical

Invalid

Invalid adjective - Not using or following good reasoning.
Usage example: an argument which has one untrue premise is invalid

Logical is an antonym for invalid in topics: unfounded, worthless.

Logical

Logical adjective - According to the rules of logic.
Usage example: the lawyer won the case with a logical argument about the motives of the suspect

Invalid is an antonym for logical in probable topic.

Nearby Words: logic, logically, logicality, logician

Both words in one sentence

  • However, one must keep in mind that—depending on the surrounding circumstances—a deductively fallacious argument may still, nonetheless, be a reasonable and (inductively) logical argument that has decent prospects of being true despite the deductive logic being invalid.
  • Film / Minority Report Since he's aware of where and when he will commit this murder, the logical thing to do would be to hide himself until such time that the vision is rendered invalid, at worst proving that the Precogs' vision was wrong (or, one could argue, was prevented because he himself chose to prevent it).
Cite this Source
Logical and Invalid. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/invalid/logical
Invalid & Logical. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/invalid/logical>.
Logical or Invalid. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/invalid/logical.
Google Ngram Viewer shows how "invalid" and "logical" have occurred on timeline