excessively forward; "an assumptive person"; "on a subject like this it would be too assuming for me to decide"; "the duchess would not put up with presumptuous servants"

Assumed, or capable of being assumed; characterized by assumption; making unwarranted claims.

accepted as real or true without proof; "an assumed increase in population"; "the assumed reason for his absence"; "assumptive beliefs"; "his loyalty was taken for granted"