English

Adverb

treasonously ‎(comparative more treasonously, superlative most treasonously)

1. In a treasonous manner, or to a treasonous degree
   • 2009, January 23, “Eve M. Kahn”, in Conversation-Piece Buys, Maybe. Intriguing Histories, Definitely.:

     […] British potters in Liverpool treasonously inscribed pro-American slogans on 1810s pitchers for the lucrative export trade ($2,000 to $6,000 at William R. and Teresa F. Kurau).