Harmful and Nonpoisonous

Opposite meaning words

Harmful adjective - Causing or capable of causing harm.

Usage example: DDT has been proven to be extremely harmful to the environment

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Nonpoisonous is an antonym for harmful.

Nearby Words: harm, harmed, harmless, harmfully, harmlessly

Nonpoisonous adjective - Not producing poison.

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Harmful is an antonym for nonpoisonous in not dangerous topic.

Cite this Source

Nonpoisonous and Harmful. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/harmful/nonpoisonous

Harmful & Nonpoisonous. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/harmful/nonpoisonous>.

Nonpoisonous or Harmful. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/harmful/nonpoisonous.

Google Ngram Viewer shows how "harmful" and "nonpoisonous" have occurred on timeline