D defs.my
Entry 2 senses Webster, 1913

Presumptive

/prēz-ŭm'-ptĭv/ · Pre·sump·tive · IPA /pɹiˈzʌm(p)tɪv/
01 a. Based on presumption or probability; grounded on probable evidence; probable; as, presumptive proof.
  1. 1.
    Based on presumption or probability; grounded on probable evidence; probable; as, presumptive proof.
  2. 2.
    Presumptuous; arrogant.[R.]
Phrases & compounds
Presumptive evidence — that which is derived from circumstances which necessarily or usually attend a fact, as distinct from direct evidence or positive proof; indirect or circumstantial evidence. “Presumptive evidence of felony should be cautiously admitted.” Blackstone. The distinction, however, between direct and presumptive (or circumstantial) evidence is now generally abandoned; all evidence being now more or less direct and more or less presumptive. Blackstone.
Presumptive heir — See Heir presumptive, under Heir.