Liberty  n. (pl. -ies) 1 freedom from captivity etc. 2 right or power to do as one pleases. 3 (usu. In pl.) Right or privilege granted by authority.  at liberty 1 free. 2 (foll. By to + infin.) Permitted. Take liberties (often foll. By with) behave in an unduly familiar manner. [latin: related to *liberal]