Nonvalid and Sound

Opposite meaning words

Nonvalid adjective - Having no basis in reason or fact.

Usage example: a nonvalid theory that most scientists rejected long ago

Show all Definitions

Sound is an antonym for nonvalid.

Sound adjective - According to the rules of logic.

Show all Definitions

Nonvalid is an antonym for sound.

Nearby Words: sounded, soundness, soundly, sounding, sounder

Cite this Source

Sound and Nonvalid. (2017). Retrieved 2026, August 14, from https://thesaurus.plus/related/nonvalid/sound

Nonvalid & Sound. N.p., 2017. Web. 14 Aug. 2026. <https://thesaurus.plus/related/nonvalid/sound>.

Sound or Nonvalid. 2017. Accessed August 14, 2026. https://thesaurus.plus/related/nonvalid/sound.

Google Ngram Viewer shows how "nonvalid" and "sound" have occurred on timeline