Any process that increases the frequency, rate or extent of the directed killing of a target cell by a neutrophil.
Synonyms:
exact_synonym:
positive regulation of neutrophil mediated cell killing; up regulation of neutrophil mediated cytotoxicity; upregulation of neutrophil mediated cytotoxicity
narrow_synonym:
activation of neutrophil mediated cytotoxicity; stimulation of neutrophil mediated cytotoxicity