AbstractThis paper explores how a distinctive politeness token can establish itself in a variety of world English by virtue of its pragmatics. It examines the usage of no worries as a negative politeness thanking response in a large multigenerational corpus of informal dialogues by men and women recorded at the University of Western Australia (UWA). Data from this UWA corpus reflect the steady evolution of no worries, from its indexical association with Australian men's talk to be taken up by younger Australian women. Though rooted in laconic spoken exchanges, the data also show extended uses of no worries in quoted speech as well as narrative reconstructions of spoken encounters to highlight their outcomes. In its further linguistic evolution, it works as a stance adverbial in dramatized interior monologues. It thus acquires new functions in various discourse contexts where a modicum of negative politeness adds value to the narrative or argument.