Uninitiate is from un- ('not') + initiate, from Latin initiare ('to begin, admit into mysteries'), from initium ('beginning'), from inire ('to go in'), from in- ('into') + ire ('to go'). Important recorded forms include un- (Old English), initiare (Latin), initium (Latin), and ire (Latin). Morphologically, the un- element marks negation, reversal, removal, or deprivation, while the base supplies the action, quality, or state being denied or undone. The modern sense is largely compositional, with the historical elements narrowing into a stable English lexical item. In current use it covers a person not initiated into special knowledge; uninstructed. The wider family includes derived forms such as uninitiated and related words such as initiate, initiation, and initial.