kick off

To make the first kick in a game or part of a game.

To start; to launch; to set in motion.

(UK, informal) To be overcome with anger, to start an argument or a fight; to behave aggressively.

(informal) To have a fight or argument start; to fight or argue.

To dismiss; to expel; to remove from a position.

To suddenly become more active.

(US) To shut down or turn off suddenly.

(US, informal) To die or quit permanently.

(US, slang) To force the weaning of a bovine cow's calf by restricting the calf's access to its mother's udders, whether by literally kicking it away or another method.

The opening kick of each half of a game of football.

The opening sequence of any event.

The opening sequence of notes in a song, usually played by the song's main instrument, to indicate the beginning of the song.