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
Threatening and deadly are semantically related. In some cases you can use "Threatening" instead an adjective "Deadly".
Nearby Word: dead
Threatening
Threatening adjective - Involving potential loss or injury.
Usage example: threatening rocks lined that narrow stretch of the river through which we would be rafting
Deadly and threatening are semantically related. Sometimes you can use "Deadly" instead an adjective "Threatening".
Mutual synonyms
Related pairs
Both words in one sentence
- And then when she tried to reclaim power by threatening Breyos, he injected her with deadly spider venom and left her to die.
Source: Being Tortured Makes You Evil -
In "Pa Make Loa", Chin and Danno literally pump a suspect for info by threatening to pump him with a deadly virus his boss was trying to buy.
Source: Series / Hawaii Five-0 - Used by the Fourth Doctor back in the classic series, after threatening someone with a "deadly jelly-baby" didn't work out - not because they didn't buy it, but because they told him to kill the man he was threatening.
Source: Take Me to Your Leader
Cite this Source
Threatening and Deadly. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/deadly/threatening
Deadly & Threatening. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/deadly/threatening>.
Threatening or Deadly. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/deadly/threatening.
Google Ngram Viewer shows how "deadly" and "threatening" have occurred on timeline