noun
guess implies the forming of a judgment or estimate (often a correct one) without sufficient knowledge for certainty he guessed the number of beans in the jar; to conjecture is to infer or predict from incomplete or uncertain evidence I cannot conjecture what his plans are; surmise implies a conjecturing through mere intuition or imagination she surmised the truth
verb
To attempt an answer on inadequate evidence
To make a choice, almost at hazard
To choose rightly on little or no evidence
See guess in Webster's New World Roget's A-Z Thesaurus II
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