B1
to demand that something must be done or that you must have a particular thing
Dictionary examples:
The teacher insisted we do homework during summer vacation. (0.0)
My friend insists that aliens built the pyramids. (0.0)
My mom insists I call her every day, even during exams. (0.0)
He insists we leave at 8:30. (20.9)
She insisted on seeing her lawyer. (26.1)
Please go first - I insist! (36.1)