assumption

noun

1.
a statement that is assumed to be true and from which a conclusion can be drawn
foreweening premise premiss
Derived from:
assume
2.
a hypothesis that is taken for granted
foreguess supposal supposition
Derived from:
assume
3.
the act of taking possession of or power over something
laying claim
Derived from:
assume
4.
audacious (even arrogant) behavior that you have no right to
effrontery presumption presumptuousness
5.
the act of assuming or taking for granted
Derived from:
assume