Harmless
Harmless adjective - Not causing or being capable of causing injury or hurt.
Usage example: a perfectly harmless little spider
Nontoxic is a synonym for harmless in safe topic. In some cases you can use "Nontoxic" instead an adjective "Harmless", when it comes to topics like not injurious or dangerous. popular alternative
Nontoxic
Nontoxic adjective - Not producing or resulting from poison.
Harmless is a synonym for nontoxic in not dangerous topic. You can use "Harmless" instead an adjective "Nontoxic". popular alternative
Mutual synonyms
Cite this Source
Nontoxic and Harmless. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/harmless/nontoxic
Harmless & Nontoxic. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/harmless/nontoxic>.
Nontoxic or Harmless. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/harmless/nontoxic.
Google Ngram Viewer shows how "harmless" and "nontoxic" have occurred on timeline