Synonyms for Think (same or very similar meaning)
WordNet sense 1 (have in mind as a purpose):
intend, mean
WordNet sense 2 (judge or regard; look upon; judge):
believe, conceive, consider
WordNet sense 3 (expect, believe, or suppose):
guess, imagine, opine, reckon, suppose
WordNet sense 4 (use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments):
cerebrate, cogitate
WordNet sense 5 (recall knowledge from memory; have a recollection):
recall, recollect, remember, retrieve, recall, recollect, call up, call back
From the ODE community, based on WordNet
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