adverb
insidiously
Etymology tree Spanish insidioso Proto-Indo-European *men- Proto-Indo-European *-tis Proto-Indo-European *méntis Proto-Italic *mentis Latin mēns Old Spanish -mente Spanish -mente Spanish insidiosamente From insidioso + -mente.
insidiously
Etymology tree Spanish insidioso Proto-Indo-European *men- Proto-Indo-European *-tis Proto-Indo-European *méntis Proto-Italic *mentis Latin mēns Old Spanish -mente Spanish -mente Spanish insidiosamente From insidioso + -mente.