Terms starting with U

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• U=USTIsU=U means that a person living with HIV who keeps an undetectable viral load through treatment cannot pass HIV on to sexual partners.
• U up?Dating-app slang & abbreviationsA late-night text asking whether someone is awake, widely understood as an invitation to meet up or talk intimately.
• UnicornDating-app slang & abbreviationsIn non-monogamous dating, a single person (often a bisexual woman) who dates or joins an existing couple. Named for being sought after and supposedly rare.
• Unicorn hunterDating-app slang & abbreviationsA couple, often a man and a woman, looking for a single person, usually a bisexual woman, to join them. The term is frequently critical.
• UpskirtingConsent & boundariesSecretly taking photos or videos up someone's clothing, such as under a skirt, without their consent.
• Urinary tract infectionBody & healthA urinary tract infection (UTI) is an infection anywhere in the urinary system, most often the bladder, causing a burning feeling when urinating and needing to go often.
• UterusBody & healthThe uterus, or womb, is a hollow, muscular organ in the pelvis where a fertilised egg can implant and a pregnancy develops. Its lining is shed each month as a period when there is no pregnancy.