non·con·tem·po·rar·y, adjective, noun, plural non·con·tem·po·rar·ies.
ul·tra·con·tem·po·rar·y, adjective, noun, plural ul·tra·con·tem·po·rar·ies.
1. coexistent, concurrent, simultaneous. Contemporary, contemporaneous, coeval, coincident all mean happening or existing at the same time. Contemporary often refers to persons or their acts or achievements: Hemingway and Fitzgerald, though contemporary, shared few values. Contemporaneous is applied chiefly to events: the rise of industrialism, contemporaneous with the spread of steam power. Coeval refers either to very long periods of time—an era or an eon—or to remote or long ago times: coeval stars, shining for millenia with equal brilliance; coeval with the dawning of civilization. Coincident means occurring at the same time but without causal or other relationships: prohibition, coincident with the beginning of the 1920s.