stride - Progress or advancement: A significant step forward in development or improvement; or a long step or pace: A way of walking with long, decisive steps.

The Supreme Court's decision was a signfication stride in the movement towards desegretation.
muzzle - A device, usually an arrangement of straps or wires, placed over an animal's mouth to prevent the animal from biting, eating, etc.

In addition to a strait jacket, Hannibal Lecter was forced to wear a muzzle so he wouldn't eat people.
badger - To repeatedly and annoyingly ask someone to do something.
Every time that Arnold asked Samantha to go out on a date, she would tell him firmly ‘No’. But each time he saw her, he would badger her again and again about wanting to go out, and again she said 'No!'