Insidiously
Insidiously adverb - In a harmfully insidious manner.
Show all Definitions
Synonyms for Insidiously
Undercover and insidiously are semantically related. In some cases you can use "Undercover" instead an adverb "Insidiously".
Nearby Word: insidious
Undercover
Undercover adjective - Undertaken or done so as to escape being observed or known by others.
Insidiously and undercover are semantically related. Sometimes you can use "Insidiously" instead an adverb "Undercover".
Mutual synonyms
Related pairs
- underhanded and insidiously
- underhanded and undercover
- clandestine and insidiously
- clandestine and undercover
- underhand and insidiously
- underhand and undercover
- furtively and insidiously
- furtively and undercover
- secretly and insidiously
- secretly and undercover
- privately and insidiously
- privately and undercover
- covertly and insidiously
- covertly and undercover
Cite this Source
Undercover and Insidiously. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/insidiously/undercover
Insidiously & Undercover. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/insidiously/undercover>.
Undercover or Insidiously. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/insidiously/undercover.
Google Ngram Viewer shows how "insidiously" and "undercover" have occurred on timeline