Home › Words › F › fansplainfansplain/ˌfænˈspleɪn/fansplain means to explain something as a fan or in a fannish manner.fansplain is pronounced /ˌfænˈspleɪn/.EtymologyFrom fan + -splain.verbTo explain something as a fan or in a fannish manner.Definitions & examples from Wiktionary (CC BY-SA 3.0).