underthrow \ˈ ̷ ̷ ̷ ̷ ˌ ̷ ̷ \verb Etymology:under (I) + throw (I) transitive verb : to throw (a ball or pass) short of the intended receiver in football < underthrow a pass > also : to throw a pass short of < the quarterback underthrew the receiver > intransitive verb : to underthrow a pass in football • underthrownoun