The Collaborative International Dictionary
Self-educated
Self-educated \Self`-ed"u*ca`ted\, a. Educated by one's own efforts, without instruction, or without pecuniary assistance from others.
Douglas Harper's Etymology Dictionary
Wiktionary
self-educated
a. Of a person, having learned without the direction of a teacher.
WordNet
self-educated
adj. educated by your own efforts rather than by formal instruction