marked by or showing unaffected simplicity and lack of guile or worldly experience; "a teenager's naive ignorance of life"; "the naive assumption that things can only get better"; "this naive simple creature with wide friendly eyes so eager to believe appearances"
(of societies) highly developed especially in technology or industry; "advanced societies"; "an advanced country technologically"
far along in time; "a man of advanced age"; "advanced in years"; "a ripe old age"; "the ripe age of 90"
ahead in development; complex or intricate; "advanced technology"; "a sophisticated electronic control system"
at a higher level in training or knowledge or skill; "an advanced degree"; "an advanced text in physics"; "special seminars for small groups of advanced students at the University"
farther along in physical or mental development; "the child's skeletal age was classified as `advanced'"; "children in the advanced classes in elementary school read far above grade average"
ahead of the times; "the advanced teaching methods"; "had advanced views on the subject"; "a forward-looking corporation"; "is British industry innovative enough?"
not appropriate in application; defective; "an infelicitous remark"; "infelicitous phrasing"; "the infelicitous typesetting was due to illegible copy"
marked by or producing unhappiness; "infelicitous circumstances"; "unhappy caravans, straggling afoot through swamps and canebrakes"- American Guide Series
uneducated in the fundamentals of a given art or branch of learning; lacking knowledge of a specific field; "she is ignorant of quantum mechanics"; "he is musically illiterate"
uneducated in general; lacking knowledge or sophistication; "an ignorant man"; "nescient of contemporary literature"; "an unlearned group incapable of understanding complex issues"; "exhibiting contempt for his unlettered companions"
unaware because of a lack of relevant information or knowledge; "he was completely ignorant of the circumstances"; "an unknowledgeable assistant"; "his rudeness was unwitting"
without preparation; not prepared for; "unprepared remarks"; "the shock was unprepared"; "our treaty makers approached their immensely difficult problems unprepared"- R.E.Danielson