un-presumptuous

adjective

1. full of, characterized by, or showing presumption or readiness to presume in conduct or thought, as by saying or doing something without right or permission.
2. unwarrantedly or impertinently bold; forward.
3. Obsolete. presumptive.

adjective

1. characterized by presumption or tending to presume; bold; forward
2. an obsolete word for presumptive

adj.mid-14c., from Old French presumtuex (12c.; Modern French présomptueux) and directly from Late Latin praesumptuosus, variant of praesumptiosus, from past participle stem of Latin praesumere “anticipate,” in Late Latin, “assume” (see presumption). Related: Presumptuously; presumptuousness.