Faultless and Invalid

Opposite meaning words

Faultless adjective - Being entirely without fault or flaw.

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Invalid is an antonym for faultless.

Nearby Words: fault, faulty, faultlessly

Invalid adjective - Not being in agreement with what is true.

Usage example: that's an invalid assumption on your part

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Faultless is an antonym for invalid.

Cite this Source

Invalid and Faultless. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/faultless/invalid

Faultless & Invalid. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/faultless/invalid>.

Invalid or Faultless. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/faultless/invalid.

Google Ngram Viewer shows how "faultless" and "invalid" have occurred on timeline