treaˈsonably adverb

treaˈsonous adjective

treason felony noun

Any of several offences that ceased to be considered to be a full-blown act of treason in the mid-19c

constructive treason

Anything that may be interpreted as equivalent to actual treason by leading naturally to it

high treason

Any of several offences against the state or the sovereign

misprision of treason

Knowledge of treason and concealment thereof

petty treason (historical)

The murder of a husband by a wife, a master by a servant, etc