Nothing

As sung by Kate Fisher, one line in "The Ballad of the Last Chance Saloon" was "it's your last chance of nothing, it's the Last Chance Saloon". (TV: The Gunfighters)

At the end of a discussion between Lady Penelope Creighton-Ward and Jimmy Bondson in the Forest of Digne on why Bondson needed the help of International Rescue, Lady Penelope told him to "do nothing, say nothing", and that she would contact him. (TV: The Man from MI.5)

In Lady and the Tramp, after Lady asked what was wrong with her license, Peg told her that "there ain't nothing wrong with it", and that it was her "passport to freedom". (TV: Disney Time)

Hiding his Abzorbalovian form behind a newspaper in basement unit 4b, Victor Kennedy told Ursula Blake and Elton Pope that the voice of Colin Skinner, whose face was embedded in his abdomen after he absorbed him, was nothing after he called for help. Immediately after, Skinner cried out louder and Victor told him to shut up only for Ursula and Elton to discover that Victor was the Abzorbaloff. (TV: Love & Monsters)

Information from non-valid sources
While looking into the Multi-Universe Transprojector, Penn Zero asked "[what was] with the abyss of nothingness", only for the TARDIS to fly past on the screen, leaving Penn speechless. (TV: Untitled)