adj. 25B6; adjective
she seemed terribly unsophisticated : UNWORLDLY, naive, simple, innocent, ignorant, green, immature, callow, inexperienced, childlike, artless, guileless, ingenuous, natural, unaffected, unassuming, unpretentious.
unsophisticated software : SIMPLE, crude, basic, rudimentary, primitive, rough and ready; straightforward, uncomplicated, uninvolved.