presumptive
Pronunciation:
/pɹɪˈzʌmptɪv/adjective
Definitions
Based on presumption, probability, conjecture, hypothesis or belief.
Example: By late May, he was already considered his party's presumptive nominee.
Making presumptions; behaving as one who presumes, who assumes that which they perhaps should not.
Example: Forgive me for being presumptive, but aren't you and Mark engaged?