treasonously
|trea-son-ous-ly|
/ˈtriː.zən.əs.li/
(treasonous)
in a traitorous manner
Etymology
'treasonously' originates from English, specifically the adjective 'treasonous', where the suffix '-ly' meant 'in the manner of' (forming an adverb).
'treasonous' developed from Middle English 'tresonous' / 'tresounous' (formed from 'treason' + '-ous'), and 'treason' comes from Old French 'traison' or 'treison'.
Initially related to 'treason' (the crime of betraying one's country) and meaning 'full of or relating to treason'; over time the adverbial form came to mean 'in a traitorous or disloyal manner'.
Meanings by Part of Speech
Adverb 1
in a treasonous manner; traitorously or disloyally toward one's country, sovereign, or government.
He was accused of acting treasonously when he passed classified documents to a foreign power.
Synonyms
Antonyms
Last updated: 2025/11/08 13:50