Try to remember that uncertain means equivocal and certain means unequivocal. That's a tricky movement the un- is making, and a lot of people get stumped.
From the Latin aequus 'equal, the same' + vocare "to call," equivocal describes when something is too close to call. Whose hand first touched the last brownie on the plate? We asked everyone but the answers were equivocal.
