Uptalk, also called upspeak, rising intonation, and (misleadingly) high-rising terminal, is where someone ends a statement as though it were a question? These two are for illustration? Uptalk is stereotypically associated with Australians, ‘Valley Girls’, and young women generally.
It’s also widely hated. Get people talking about their language peeves, and sooner or later uptalk will crop up. It has been described as an ‘annoying tic’ (The Smithsonian), ‘worse than vocal fry’ (Time), and as a ‘nasty habit’ in Psychology Today, which also worries that ‘statements and opinions will become extinct’. This is feverish doom-mongering.
Even Stephen Fry, normally a tolerant sort, linguistically, gave out about uptalk on UK comedy show Room 101, complaining invidiously that it had ‘invaded Britain entirely’. The host, Paul Merton, said it could be a politeness strategy, though he didn’t call it that, but Fry was having none of it (and went on to censure quotative like, which Merton also defended). Most of the audience found uptalk ‘deeply irritating’: