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“treachery”
treachery, treason
treachery (TRECH uh ree) (noun)
A serious violation of faith or confidence: "Matt's letter seemed pure treachery given the faith Shirley had in his promise."
treason (TREE zuhn) (noun)
Overt acts to overthrow a government to which one has pledged allegiance or any significant betrayal of trust: "It was an act of treason by our associate to tell the conspirators where we were hiding."
To undertake an act of treason is a serious act of treachery that is not easily understood nor forgiven.
This entry is located in the following unit:
Confusing Words Clarified: Group T; Homonyms, Homophones, Homographs, Synonyms, Polysemes, etc. +
(page 6)