What is the Latin word for insidiously?

The usual Latin words for “insidiously” are īnsidiōsus, subdolus, dolōsus; also fraudulentus, fallāx. The right choice depends on the sense; see the distinctions below.

English → Latin

“insidiously” in Latin

īnsidiōsuscunning, deceitful, insidious; dangerous, hazardous subdoluscrafty, cunning, sly, subtle dolōsuscrafty, cunning, deceitful fraudulentusdeceitful, fraudulent; dishonest, false fallāxdeceptive, deceitful; fallacious, spurious

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

insidiously

insidiose, -issime (both Cic.): subdole (Cic.): dolose, fraudulenter: fallaciter. Vid: DECEITFULLY.

Quick answer

What is the Latin word for insidiously?: The usual Latin words for “insidiously” are īnsidiōsus, subdolus, dolōsus; also fraudulentus, fallāx. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.