Sly
Sly adjective - Clever at attaining one's ends by indirect and often deceptive means.
Vicious and sly are semantically related in mischievous topic. In some cases you can use "Vicious" instead an adjective "Sly".
Vicious
Vicious adjective - Extreme in degree, power, or effect.
Sly and vicious are semantically related in mischievous topic. Sometimes you can use "Sly" instead an adjective "Vicious".
Nearby Word: viciously
Mutual synonyms
Both words in one sentence
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Carvanha is a vicious Piranha that evolves into a still vicious, sly shark that can swim over 75 miles per hour and thoroughly tear apart a supertanker.
Source: Red Eyes, Take Warning - Dogs are portrayed as dumb brutes; foxes are sly, vicious predators; badgers kill mercilessly; and prey species (rabbits, voles, mice, birds, fish) are unintelligent, so it's okay to eat them.
Source: Carnivore Confusion / Literature
Cite this Source
Vicious and Sly. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/sly/vicious
Sly & Vicious. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/sly/vicious>.
Vicious or Sly. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/sly/vicious.
Google Ngram Viewer shows how "sly" and "vicious" have occurred on timeline