1. If you say that you had not reckoned with something, you mean that you had not expected it and so were not prepared for it. Giles had not reckoned with the strength of Sally's feelings for him.= bargain for, bargain on PHRASAL VERB: with brd-neg, V P n 2. If you say that there is someone or something to be reckoned with, you mean that they must be dealt with and it will be difficult. This act was a signal to his victim's friends that he was someone to be reckoned with...PHRASE: n PHR
account with, admit, assimilate, bear in mind, clear the board, complete, comprehend, comprise, contain, count in, cover, embody, embrace, encircle, enclose, encompass, envisage, even the score, fill, fill in, fill out, get even with, have regard for, hold, hold in mind, include, incorporate, keep in mind, keep in sight, keep in view, number among, occupy, pay old debts, pay out, receive, reckon among, reckon in, settle accounts with, settle with, take account of, take cognizance of, take heed of, take in, take into account, take into consideration, take note of, take notice of, take up