One who objects to ships or shipping deemed offensive, e.g. due to incest, age differences, abusive elements, or power gaps (treating the other partner badly because they have less authority).
One who opposes a specific ship or shipping in general.
An entrenched or aggressive adherent to a particular cause, now especially a member of a particular ideological faction.
Specifically, someone who supports the Trotskyist political view expressed in the newspaper Militant, or who engages in aggressive left-wing politics.
Fighting or disposed to fight; belligerent, warlike.
Aggressively supporting of a political or social cause; adamant, combative.