Assiduous and Careless

Opposite meaning words

Assiduous adjective - Involved in often constant activity.

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Careless is an antonym for assiduous in diligent topic.

Nearby Words: assiduity, assiduousness

Careless adjective - Not paying or showing close attention especially for the purpose of avoiding trouble.

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Assiduous is an antonym for careless.

Nearby Words: care, careful, carelessly, carelessness

Cite this Source

Careless and Assiduous. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/assiduous/careless

Assiduous & Careless. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/assiduous/careless>.

Careless or Assiduous. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/assiduous/careless.

Google Ngram Viewer shows how "assiduous" and "careless" have occurred on timeline