He was 'insistent' about paying for dinner. [=he insisted on paying for dinner; he insisted that he should pay for dinner]
My friends were 'insistent' that I go. = They were 'insistent' on my going. [=they insisted that I go]
We listened to the 'insistent' crashing of waves on the beach.
(..) Take a message. Oh, happy birthday, sir. Thank you, Maggie. I don't like her. I wouldn't even mention the following, but he was very insistent. It's obviously some sort of prank. What? Well, a gentleman called requesting to have lunch with you. I tried to assure him that you (..)1997 The Game