unfictitious

Etymology tree
Proto-Indo-European *né
Proto-Indo-European *n̥-
Proto-Germanic *un-
Proto-West Germanic *un-
Old English un-
Middle English un-
English un-
Proto-Indo-European *dʰeyǵʰ-
Proto-Indo-European *dʰi-né-ǵʰ-ti
Proto-Italic *θingō
Proto-Italic *fingōder.
Latin fingō
Latin fictus
Proto-Indo-European *-ikos
Proto-Italic *-ikos
Latin -īcus
Proto-Indo-European *-yós
Proto-Italic *-ios
Old Latin -ios
Latin -ius
Latin -īcius
Latin fictīciusbor.
English fictitious
English unfictitious
From un- + fictitious.