ninnyism

From ninny +‎ -ism.

ninnyism (plural ninnyisms)

1. predisposition to act like a ninny
   • 1962, John D. MacDonald, The Girl, the Gold Watch & Everything, first edition, page 56:

     He wondered at his own degree of ninnyism. How severe was it? How incurable was it? Could a man walk through life in a constant readiness to duck?