Initialism of Independent Television, a British commercial television network.

(informal) To accelerate or speed up quickly or suddenly.

(informal, idiomatic) Used, often after a short list, to show that further examples are unnecessary; all kinds of things.

(informal) No longer capable, not as effective as previously. / (informal) Too old to participate in something.

(informal) To persist or continue to the end.

(idiomatic) To act in a haphazard or aimless way; to act frantically or without control.

Initialism of Independent Television Authority. / (education) Initialism of Initial Teaching Alphabet.

(colloquial, often childish or humorous) Very small; minuscule.

(idiomatic) To test completely; to exercise the full range of abilities or functions.

(figuratively, informal, humorous, idiomatic) To stop talking; to be quiet; to shut one's mouth.