Groundless and Sound

Opposite meaning words

Groundless adjective - Having no basis in reason or fact.

Usage example: fears of a strike proved groundless

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Sound is an antonym for groundless.

Nearby Words: ground, groundlessness

Sound adjective - According to the rules of logic.

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Groundless is an antonym for sound.

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

Cite this Source

Sound and Groundless. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/groundless/sound

Groundless & Sound. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/groundless/sound>.

Sound or Groundless. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/groundless/sound.

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