1. (n.) A shy person; a withdrawn person -- opposed to extravert\.

ambivert choleric convert cycloid cyclothyme cyclothymic ectomorph endomorph evert extrovert intussuscept invaginate inverse invert melancholic mesomorph phlegmatic pronate resupinate reverse revolve rotate sanguine schizoid schizothyme supinate syntone transpose turn about turn around turn down turn in turn inside out turn out turn over turn the scale turn the tables turn upside down