done or made using whatever is available; "crossed the river on improvised bridges"; "the survivors used jury-rigged fishing gear"; "the rock served as a makeshift hammer"
without apparent forethought or prompting or planning; "an unplanned economy"; "accepts an unplanned order"; "an unplanned pregnancy"; "unplanned remarks"
(often followed by `of') not aware; "seemed unaware of the scrutiny"; "unaware of the danger they were in"; "unaware of the newborn hope"; "the most unaware person I've known"
taken unawares or suddenly and feeling wonder or astonishment; "surprised by her student's ingenuity"; "surprised that he remembered my name"; "a surprised expression"
without preparation; not prepared for; "unprepared remarks"; "the shock was unprepared"; "our treaty makers approached their immensely difficult problems unprepared"- R.E.Danielson
lacking knowledge gained by study often in a particular field; "is unstudied in Latin as he is in may other matters"
not by design or artifice; unforced and impromptu; "an air of unstudied spontaneous utterance is apt to be painstakingly achieved"; "simple unstudied charm"
(often followed by `of') not knowing or expecting; not thinking likely; "an unsuspecting victim"; "unsuspecting (or unaware) of the fact that I would one day be their leader"
not suspicious; "deceiving the unsuspecting public"
marked by great carelessness; "a most haphazard system of record keeping"; "slapdash work"; "slipshod spelling"; "sloppy workmanship"
dependent upon or characterized by chance; "a haphazard plan of action"; "his judgment is rather hit-or-miss"
without care; in a slapdash manner; "the Prime Minister was wearing a grey suit and a white shirt with a soft collar, but his neck had become thinner and the collar stood away from it as if it had been bought haphazard"