Intelligent
Intelligent adjective - Having or showing quickness of mind.
Slick and intelligent are semantically related. In some cases you can use "Slick" instead an adjective "Intelligent".
Slick
Slick adjective - Having or being a surface so smooth as to greatly reduce traction.
Intelligent and slick are semantically related. Sometimes you can use "Intelligent" instead an adjective "Slick".
Mutual synonyms
Both words in one sentence
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The Star Trek: The Next Generation episode "Skin Of Evil" had the crew encountering an intelligent and malevolent blob monster named Armus who resembled a humanoid oil slick.
Source: Blob Monster - The Subterraneans are "hip without being slick, they are intelligent without being corny, they are intellectual as hell and know about Pound without being pretentious or talking too much about it, they are very quiet, they are very Christlike." So those are the Subterraneans.
Source: Informed Ability / Literature -
However, Nick Slick (apparently the devil) and the Frankenstein monster seems to have always existed in the real world, and even mundane world wolves appear to have a complex language and even a religion, implying that they're far more intelligent that real-world wolves.
Source: Magic A Is Magic A
Cite this Source
Slick and Intelligent. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/intelligent/slick
Intelligent & Slick. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/intelligent/slick>.
Slick or Intelligent. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/intelligent/slick.
Google Ngram Viewer shows how "intelligent" and "slick" have occurred on timeline