Home › Words › T › twinsietwinsietwinsie means A twin.Among words judged in Lexicurio's Arena, twinsie ranks #36,606 of 42,747 for Qualifying.EtymologyFrom twin + -sie.nounA twin.e.g.““I’ve always considered Bella to be my twinsie, so if Ivan did kick Liam’s butt, then it would be for me, too. Because, twins.”” — 2014, Marquita Valentine, Be Mine:Definitions & examples from Wiktionary (CC BY-SA 3.0).