Not felicitous; unhappy; unfortunate; not fortunate or appropriate in application; not well said, expressed, or done; as, an infelicitous condition; an infelicitous remark; an infelicitous description; infelicitous words.

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