i Register
In some senses, insist is marked as obsolete. Watch for register when choosing this word.
verb
To hold up a claim emphatically.
The defendant insisted on his innocence.
I insist that my secretary dresses nicely.
To demand continually that something happen or be done; to reiterate a demand despite requests to abandon it.
The Prime Minister insisted on his Chancellor's resignation.
The Prime Minister insisted that his Chancellor resign.
To stand (on); to rest (upon); to lean (upon).
Angles likewise which insist on the Diameter, are all Right Angles.