presumption

noun
UK /prɪˈzʌmpʃən/
US /prɪˈzʌmpʃən/

A presumption is when you believe something is true without checking.

Her presumption that the store was open turned out to be wrong.


OTHER MEANINGS

2. Behavior that is too bold or rude because you do not respect limits.

He had the presumption to sit at the head of the table.

3. A legal rule that lets a court treat something as true until it is proven false.

The law has a presumption of innocence for every accused person.

4. The act of taking something for granted or accepting it without proof.

The presumption of safety led them to skip the inspection.