presumption C2+

/prɪˈzʌmpʃən/ an act of taking something for granted; arrogant or overbold behavior

presumptively C2+

/prɪˈzʌmptɪvli/ on the basis of a reasonable assumption; supposedly

presumptuous C2+

/prɪˈzʌmptʃuəs/ overstepping due bounds; arrogantly bold or forward