Definitions for "Unstudied"
not by design or artifice; unforced and impromptu; "an air of unstudied spontaneous utterance is apt to be painstakingly achieved"; "simple unstudied charm"
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;
Keywords:  unversed, skilled, followed
Not skilled; unversed; -- followed by in.
Keywords:  unlabored, spent, study, latin, lacking
Not studied; not acquired by study; unlabored; natural.
Not spent in study.
lacking knowledge gained by study often in a particular field; "is unstudied in Latin as he is in may other matters"