Language which, though relatively widely used, lacks officially sanctioned status in a particular legally constituted political entity. Example: French in Lebanon; English in Isræl.
not having official authority or sanction; "a sort of unofficial mayor"; "an unofficial estimate"; "he participated in an unofficial capacity"
not officially established; "the early election returns are unofficial"
To present participles which come from intransitive verbs, or are themselves employed as adjectives, to mark the absence of the activity, disposition, or condition implied by the participle;