Pernicious
Pernicious adjective - Causing or capable of causing harm.
Usage example: the pernicious effects of illegal narcotics on society
Unsafe and pernicious are semantically related. In some cases you can use "Unsafe" instead an adjective "Pernicious".
Nearby Word: perniciously
Unsafe
Unsafe adjective - Involving potential loss or injury.
Usage example: workers are forbidden from engaging in unsafe activities on company time
Pernicious and unsafe are semantically related. Sometimes you can use "Pernicious" instead an adjective "Unsafe".
Nearby Word: unsafely
Mutual synonyms
Related pairs
Cite this Source
Unsafe and Pernicious. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/pernicious/unsafe
Pernicious & Unsafe. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/pernicious/unsafe>.
Unsafe or Pernicious. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/pernicious/unsafe.
Google Ngram Viewer shows how "pernicious" and "unsafe" have occurred on timeline