ultra-
Follow Webster's for compounds with this prefix. If not there, write as one word except when followed by a vowel or a capital letter:
ultra-avid
ultra-industrious
ultra-Orthodox (strict Jewish beliefs)
but ultraorthodox
Follow Webster's for compounds with this prefix. If not there, write as one word except when followed by a vowel or a capital letter:
ultra-avid
ultra-industrious
ultra-Orthodox (strict Jewish beliefs)
but ultraorthodox