Harmless and Ruinous

Opposite meaning words

Harmless adjective - Not causing or being capable of causing injury or hurt.

Usage example: a perfectly harmless little spider

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Ruinous is an antonym for harmless.

Nearby Words: harm, harmful, harmlessly

Ruinous adjective - Causing or tending to cause destruction.

Usage example: a ruinous windstorm destroyed the crops

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Harmless is an antonym for ruinous in disastrous topic.

Nearby Words: ruin, ruined, ruination, ruining, ruinously

Cite this Source

Ruinous and Harmless. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/harmless/ruinous

Harmless & Ruinous. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/harmless/ruinous>.

Ruinous or Harmless. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/harmless/ruinous.

Google Ngram Viewer shows how "harmless" and "ruinous" have occurred on timeline