Irregular and Invariable

Opposite meaning words

Irregular adjective - Departing from some accepted standard of what is normal.

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Invariable is an antonym for irregular in variable topic.

Nearby Words: irregularity, irregularly

Invariable adjective - Not capable of changing or being changed.

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Irregular is an antonym for invariable in topics: regular, not changing.

Cite this Source

Invariable and Irregular. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/irregular/invariable

Irregular & Invariable. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/irregular/invariable>.

Invariable or Irregular. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/irregular/invariable.

Google Ngram Viewer shows how "irregular" and "invariable" have occurred on timeline