Lewis Short
(adjective) : sĕdentārĭus, a, um, sedeo
* Of or belonging to sitting, sitting, sedentary (very rare): sutores,Plaut. Aul. 3, 5, 39; cf. opera,Col. 12, 3, 8: necessitas assentiendi, of giving assent while sitting, i. e. without rising to make a speech, Plin. Pan. 73, 3: fatigatio,fatigue from sitting,App. M. 1 init.
Charlton T. Lewis, Charles Short, A Latin Dictionary