TREACHEROUSLY

Pronunciation (US):

(GB):

 Dictionary entry overview: What does treacherously mean? 

• TREACHEROUSLY (adverb)
  The adverb TREACHEROUSLY has 1 sense:

1. in a disloyal and faithless manner

  Familiarity information: TREACHEROUSLY used as an adverb is very rare.

 Dictionary entry details 

• TREACHEROUSLY (adverb)

Sense 1

Meaning:

In a disloyal and faithless manner

Synonyms:

faithlessly; false; traitorously; treacherously; treasonably

Context example:

his wife played him false

Pertainym:

treacherous (tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans)

 Context examples 

It was Spitz, treacherously attacking from the side.

(The Call of the Wild, by Jack London)

They would have had us share their caves with them, but Lord John would by no means consent to it considering that to do so would put us in their power if they were treacherously disposed.

(The Lost World, by Sir Arthur Conan Doyle)

He might just as well have turned a somersault and uttered an Indian war whoop, for his face was so full of suppressed excitement and his voice so treacherously joyful that everyone jumped up, though he only said, in a queer, breathless voice, Here's another Christmas present for the March family.

(Little Women, by Louisa May Alcott)

Didn't they steal sips of tea, stuff gingerbread ad libitum, get a hot biscuit apiece, and as a crowning trespass, didn't they each whisk a captivating little tart into their tiny pockets, there to stick and crumble treacherously, teaching them that both human nature and a pastry are frail?

(Little Women, by Louisa May Alcott)