Synonyms for Reckon (same or very similar meaning)
WordNet sense 1 (have faith or confidence in):
bet, calculate, count, depend, lookWordNet sense 2 (judge to be probable):
estimate, figure, forecast, estimate, count onWordNet sense 3 (deem to be):
consider, regard, see, viewWordNet sense 4 (make a mathematical calculation or computation):
cipher, compute, cypher, work outWordNet sense 5 (expect, believe, or suppose):
guess, imagine, opine, suppose, thinkFrom the ODE community, based on WordNetadd/edit