exolete /ˈɛksəliːt/ adjective3 •(no longer used) That has gone out of use; disused, obsolete.A Greeke inscription which I could not understand by reason of the antiquity of those exolete letters. — 1611 •(no longer used) That has lost its virtue; effete, insipid.The vulgar Carpobalsame…being…faint, rancid, exolet. — 1657 •(no longer used) (of flowers) Faded.Exolete, faded, or withered, as flowers. — 1730