full of, characterized by, or showing presumption or readiness to presume in conduct or thought.

unwarrantedly or impertinently bold; forward.

Obsolete . presumptive.

noun

assumption , audaciousness , audacity , boldness , brashness , brazenness , cheek , cheekiness , chutzpah , discourtesy , disrespect , effrontery , face , familiarity , forwardness , gall , impertinence , impudency , incivility , insolence , nerve , nerviness , overconfidence , pertness , pushiness , rudeness , sassiness , sauciness