treason
[noun]
Synonyms: disloyalty, duplicity, lese-majesty, mutiny, perfidy, sedition, traitorousness, treachery

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Antonyms: staunchness, allegiance
Contrasted words: allegiance, loyalty
Related Idioms: breach of trust (or faith)
Related Words: deceit, deceitfulness, duplicity, Machiavellianism, disloyalty, treacherousness, treachery, high treason, misprision

[TahlilGaran] English Synonym Dictionary ▲

trea‧son /ˈtriːzən/ noun [uncountable]
[Date: 1100-1200; Language: Old French; Origin: traison, from Latin traditio 'act of handing over or betraying', from tradere; ⇒ traitor]
the crime of being disloyal to your country or its government, especially by helping its enemies or trying to remove the government using violence ⇒ treachery
treason against
Richter is accused of committing treason against the state.
The defendant was convicted of high treason (=treason of the worst kind) and sentenced to death.
—treasonable,
—treasonous adjective:
a treasonable act against the head of state

[TahlilGaran] Dictionary of Contemporary English ▲

treason
noun
ADJ. high
PREP. ~ against an act of high treason against the English crown
PHRASES an act of treason
 ⇒ Note at CRIME (for verbs)

[TahlilGaran] Collocations Dictionary ▲