Uneducated is from un- ('not') + educated, past participle of educate, from Latin educare ('to bring up, rear, train'), related to educere ('to lead out'), from ex- ('out') + ducere ('to lead'). Important recorded forms include un- (Old English), educare (Latin), ducere (Latin), and *dewk- (Proto-Indo-European). 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 lacking formal schooling or knowledge. The wider family includes related words such as educate, education, and educable.