Dictionary.net

audacious (even arrogant) behavior that you have no right to; "he despised them for their presumptuousness"

audacious (even arrogant) behavior that you have no right to; "he despised them for their presumptuousness"

The act of presuming, or believing upon probable evidence; the act of assuming or taking for granted; belief upon incomplete proof.

Ground for presuming; evidence probable, but not conclusive; strong probability; reasonable supposition; as, the presumption is that an event has taken place.

That which is presumed or assumed; that which is supposed or believed to be real or true, on evidence that is probable but not conclusive.

The act of venturing beyond due beyond due bounds; an overstepping of the bounds of reverence, respect, or courtesy; forward, overconfident, or arrogant opinion or conduct; presumptuousness; arrogance; effrontery.

A going beyond due bounds; bold forwardness; acceptance and belief of something not fully proved; that which is taken for granted.

Act of presuming: supposition: strong probability: confidence grounded on something not proved: forward conduct: (law) assuming the truth of certain facts from circumstantial evidence.

Act of presuming; supposition; probability; confidence; forward conduct.

Blind confidence or self-assertion; insolence.

The act of taking for granted; that which may be assumed or taken for granted.

Supposition of the truth or real existence of something, without positive proof; strong probability; presumptuousness; arrogance.

A supposition previously formed; confidence grounded on strong probability; an argument strong but not demonstrative; blind or headstrong confidence; arrogance.

n. [Latin] Act of believing upon probable evidence, or taking for granted ;-ground for presuming ; strong probability ; -a thing believed true on satisfactory evidence ;- forward, venturesome, over - confident, or arrogant opinion or conduct ; presumptuousness.