not appropriate or proper (or even legal) in the circumstances; "undue influence"; "I didn't want to show undue excitement"; "accused of using undue force"
lacking justification or authorization; "unreasonable searches and seizures"; "desire for undue private profit"; "unwarranted limitations of personal freedom"
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"