ETYM Latin, comp. of ultra, ultro, beyond, on the other side, properly cases of an old adjective, formed with a comparative suffix, which is akin to ol. uls beyond, Latin olim formerly, hereafter, orig., at that time, ille that, ol. olle, ollus. Related to Outrage.
Beyond or outside an area of immediate interest; remote.
Further; beyond; not seen or avowed; secret.