Infectious
Infectious adjective - Exciting a similar feeling or reaction in others.
Lethal and infectious are semantically related. In some cases you can use "Lethal" instead an adjective "Infectious".
Lethal
Lethal adjective - Likely to cause or capable of causing death.
Usage example: we were lucky that the snake's venom wasn't lethal, and our friend turned out to be all right
Infectious and lethal are semantically related. Sometimes you can use "Infectious" instead an adjective "Lethal".
Nearby Word: lethality
Mutual synonyms
Related pairs
- mortal and infectious
- mortal and lethal
- baneful and infectious
- baneful and lethal
- dangerous and infectious
- dangerous and lethal
- noxious and infectious
- noxious and lethal
- poisonous and infectious
- poisonous and lethal
- pernicious and infectious
- pernicious and lethal
- deadly and infectious
- deadly and lethal
Both words in one sentence
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It typically involves taking an already highly infectious and lethal agent, such as smallpox, and modifying it just enough to render vaccines ineffective.
Source: Synthetic Plague - Breyos had a plate of highly infectious and most definitely lethal Wither matter shoved into his eyeball after he insulted A_J's recently deceased dog Holarctic.
Source: Eye Scream / Web Original -
He ends up alone in the infectious diseases room with no idea which ones are curable and which are incurable but lethal.
Source: Film / World War Z
Cite this Source
Lethal and Infectious. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/infectious/lethal
Infectious & Lethal. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/infectious/lethal>.
Lethal or Infectious. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/infectious/lethal.
Google Ngram Viewer shows how "infectious" and "lethal" have occurred on timeline