Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun saboteur

2 senses of saboteur

Sense 1
saboteur, wrecker, diversionist -- (someone who commits sabotage or deliberately causes wrecks)
       => destroyer, ruiner, undoer, waster, uprooter -- (a person who destroys or ruins or lays waste to; "a destroyer of the environment"; "jealousy was his undoer"; "uprooters of gravestones")

Sense 2
fifth columnist, saboteur -- (a member of a clandestine subversive organization who tries to help a potential invader)
       => traitor, treasonist -- (someone who betrays his country by committing treason)