Origin: Latin suffix -ive
Assumptive has 3 different meanings across 1 category:
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"
accepted as real or true without proof
"the assumed reason for his absence"
"assumptive beliefs"
Held as true or valid without evidence.