Fromscrew +‎ball.

• IPA^(key):/ˈskɹuːbɔːl/

• Audio(US):

  (file)

• Rhymes:-uːbɔːl

screwball (pluralscrewballs)

1. (baseball) Apitch thrown with added pressure by the index finger and a twisting wrist motion resulting in a motion to the right when thrown by a right-handed pitcher.

   Thescrewball is not thrown much because it tends to damage pitcher's arms.

2. (US) One who behaves in a crazy manner.

   I will not listen to thisscrewball any longer.

screwball (comparativemorescrewball,superlativemostscrewball)

1. (originally US) Crazy,offbeat,bizarre,zany, or weird.
   • 2013 January 11, Tom Shone,The Guardian‎^[1]:

     Also a big hand forSilver Linings Playbook, an exuberant modernscrewball comedy we had, in an unseemly fit of cynicism, deemed "too entertaining" for Academy voters.

• screwball comedy