Suppressed
Part of speech: verb
Definition: To put an end to, especially with force, to crush, do away with; to prohibit, subdue.
Example sentence: It is a paradox that every dictator has climbed to power on the ladder of free speech. Immediately on attaining power each dictator has suppressed all free speech except his own.
Smothered
Part of speech: verb
Definition: To suffocate; stifle; obstruct, more or less completely, the respiration of something or someone.