The term "knockons" generally refers to the mistakes made while handling the ball in rugby. However, there are several other ways to express this term in the English language. One synonym for "knockons" is "fumbles" which can be attributed to any sport where a player loses control of the ball unintentionally. Another synonym for "knockons" is "bobbles" which usually refers to a baseball player mishandling a ball. "Mishandles" is another term that can be used to replace "knockons". This can apply to many different sports, particularly those that involve catching or handling of a ball.