presumptive

Short definition from Wiktionary

Adjective

1. 1
   Based on presumption or conjecture; inferred, likely, presumed.
2. 2
   Based on presumption or conjecture; inferred, likely, presumed: Often postpositive, as in heir presumptive: of an heir or heiress: presumed to be entitled to inherit unless someone with a superior entitlement is born.
3. 3
   Based on presumption or conjecture; inferred, likely, presumed: Of a cell or tissue: which has yet to differentiate, but is presumed to develop into a particular body part.
4. 4
   Synonym of presumptuous (“making unwarranted presumptions or assumptions, often out of arrogance or excessive self-confidence, and thus exceeding what is appropriate or right”).
5. 5
   Chiefly in presumptive evidence: providing a reasonable basis for a certain presumption or conclusion to be drawn.