Added 10 October 2026 upside-down adjective Categories: Describing WordsObscure Words adjective ! Definition from WordNet 3.1, Princeton University. More about upside-down at Wordnik → Where our words come from → Being in such a position that top and bottom are reversed. a quotation mark is sometimes called an inverted comma Related Words: invertedturnedamazingastoundingback-to-frontbackwardsinside-outreturnedsidewaysstaggeringupsidedowninverting Back to today's word