張はり飛とばす

godan verb (-su), transitive verb

slap hard; knock flying; send sprawling

Emphatic: to hit someone so hard they are knocked off their feet or sent flying. Often used in rough or dramatic contexts.

• 彼かれは相あい手てを張はり飛とばした。

  He slapped his opponent and sent him flying.

• あんなに強つよく張はり飛とばされたら、誰だれでも倒たおれるよ。

  If you get slapped that hard, anyone would go down.