Subvert is from Latin subvertere ('to overturn, overthrow'), from sub- ('up from under') + vertere ('to turn'), from Proto-Indo-European *wert- ('to turn'). Important recorded forms include sub (Latin), vertere (Latin), and *wert- (Proto-Indo-European). Morphologically, the sub- element contributes the sense of under, below, secondary status, or movement from beneath, with the base naming the field of application. The modern sense continues the older lexical line without requiring a separate origin. In current use it covers to undermine the power and authority of an established system or institution. The wider family includes derived forms such as subverter, subversion, subversive, and subvertible and related words such as convert, invert, divert, and revert.