treacherously

English

Etymology

From treacherous +‎ -ly.

Adverb

treacherously (comparative more treacherously, superlative most treacherously)

1. In a treacherous manner.

   The former spy behaved treacherously.

Translations

in a treacherous manner

• Finnish: kavalasti (fi), petollisesti (fi)
• French: traîtreusement (fr)
• Italian: proditoriamente (it), subdolamente (it)
• Spanish: traidoramente
• Swedish: förrädiskt (sv)