Wiktionary
chummily
adv. In a chummy manner
Usage examples of "chummily".
Cicely and Ashlee were walking up Camden High Street one day, chummily arm in arm.
He took the coffee from her and she sat chummily on the stool at the side of the desk.
He chummily suggests a comparison between the devastating effects of the explosion and the devastating effects of the costume.
Midnight moved quickly after him, and slipped her arm chummily through his so they could walk together.
Knowles seemed in no hurry, chatting chummily about skip-traces and DNA evidence while expressing a gifted amateur's interest in investigation.
Sometime later they were talking as chummily as if the Colonel's chain had not obstructed the Moon venture since its inception.