Deleterious
Deleterious adjective - Causing or capable of causing harm.
Usage example: nicotine has long been recognized as a deleterious substance
Deadly is a synonym for deleterious in dangerous topic. In some cases you can use "Deadly" instead an adjective "Deleterious".
Deadly
Deadly adjective - Likely to cause or capable of causing death.
Usage example: the doctors were alarmed about the outbreak of the deadly new virus
Deleterious is a synonym for deadly in dangerous topic. You can use "Deleterious" instead an adjective "Deadly", if it concerns topics such as harmful, causing end of life.
Nearby Word: dead
Mutual synonyms
Related pairs
- mortal and deleterious
- mortal and deadly
- baleful and deleterious
- baleful and deadly
- baneful and deleterious
- baneful and deadly
- dangerous and deleterious
- dangerous and deadly
- noxious and deleterious
- noxious and deadly
- hurtful and deleterious
- hurtful and deadly
- injurious and deleterious
- injurious and deadly
Cite this Source
Deadly and Deleterious. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/deleterious/deadly
Deleterious & Deadly. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/deleterious/deadly>.
Deadly or Deleterious. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/deleterious/deadly.
Google Ngram Viewer shows how "deleterious" and "deadly" have occurred on timeline