v. 1 tr. count or compute by calculation. 2 tr. (foll. by in) count in or include in computation. 3 tr. (often foll. by as or to be) consider or regard (reckon him wise; reckon them to be beyond hope). 4 tr. a (foll. by that + clause) conclude after calculation; be of the considered opinion. b colloq. (foll. by to + infin.) expect (reckons to finish by Friday). 5 intr. make calculations; add up an account or sum. 6 intr. (foll. by on, upon) rely on, count on, or base plans on. 7 intr. (foll. by with) a take into account. b settle accounts with. reckon up 1 count up; find the total of. 2 settle accounts. to be reckoned with of considerable importance; not to be ignored.
[ OE (ge)recenian f. WG ]