autoschediasm

First recorded in 1835–45; from Greek autoschedíasma, derivative, with -(s)ma noun suffix, of autoschediázein “to extemporize,” verbal derivative of autoschédios “hand-to-hand, offhand, improvised,” equivalent to auto- auto- ¹ + schédios “near, casual, offhand,” derivative of schedón (adverb) “near, close by,” akin to échein “to hold, possess”