Base
Base adjective - Not following or in accordance with standards of honor and decency.
Sly
Sly adjective - Clever at attaining one's ends by indirect and often deceptive means.
Mutual synonyms
Both words in one sentence
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Sly 2: Band of Thieves, the main characters plan to force the villainous tiger Rajan out of hiding by flooding his base, specifically because cats hate water.
Source: Cats Hate Water -
The trader's associates question the ruler's demand for gold (why would he want something that useless, and why would someone base currency on it?), but sell him a machine which can transmute base metals into gold on the sly.
Source: Literature / Foundation -
This is part of why Sly Cooper has a large adult fan base.
Source: Franchise / Sly Cooper
Cite this Source
Sly and Base. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/base/sly
Base & Sly. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/base/sly>.
Sly or Base. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/base/sly.
Google Ngram Viewer shows how "base" and "sly" have occurred on timeline