Insidious
Insidious adjective - Working or spreading in a hidden and usually injurious way.
Smart and insidious are semantically related. In some cases you can use "Smart" instead an adjective "Insidious".
Nearby Word: insidiously
Mutual synonyms
Both words in one sentence
- No match for the superpowered Gauls and not smart enough to deal with them in more insidious ways.
Cite this Source
Smart and Insidious. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/insidious/smart
Insidious & Smart. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/insidious/smart>.
Smart or Insidious. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/insidious/smart.
Google Ngram Viewer shows how "insidious" and "smart" have occurred on timeline