Interference in kickball is when a player, spectator, referee, or object interferes with the game either deliberatly or bi-accident. There are lots of interference rules in kickball such as referee's interference, spectator's interference, baserunner's interference, kicker's interference, and fielder's interference.
Kicker's interference in kickball is a rule that states the kicker cannot interfere with a fielder's ability to field the kickball. For example, if a kicker kicks the ball a second time when advancing to first base as the kicker-runner he will be called out by the Head Referee.
Defensive interference in kickball is called on any fielder who impedes the movement of a baserunner on the field. If a fielder is called for interference, the previous play is nullified and must be replayed.
Referee's interference in kickball is a rule that states a referee cannot interfere while the ball is in play such as impeding the movement of a baserunner or fielder. In the case of referee interference, the previous play is nullified and batter must return to the kicker's box.