Harmless and Perilous

Opposite meaning words

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

Usage example: a perfectly harmless little spider

Show all Definitions

Perilous is an antonym for harmless.

Nearby Words: harm, harmful, harmlessly

Perilous adjective - Involving potential loss or injury.

Usage example: a perilous journey through hostile territory

Show all Definitions

Harmless is an antonym for perilous.

Nearby Words: peril, perilously, periled

Cite this Source

Perilous and Harmless. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/harmless/perilous

Harmless & Perilous. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/harmless/perilous>.

Perilous or Harmless. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/harmless/perilous.

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