adv believe to be true. It’s still perfectly acceptable in the U.K. to say “I reckon” this, that or the other: We’re going to get a taxi to the airport but Dan reckons we’re still not going to make it. The term is still used in the Southern U.S. but regarded with disdain by snobby northerners who believe it can only be uttered whilst chewing a piece of straw and leaning on a gate.