negatively regulates short-day photoperiodism, flowering negative regulation of short-day photoperiodism, flowering GO:0048577 biological_process downregulation of short-day photoperiodism, flowering down-regulation of short-day photoperiodism, flowering down regulation of short-day photoperiodism, flowering inhibition of short-day photoperiodism, flowering Any process that stops, prevents or reduces short-day photoperiodism, where the response associated with the photoperiodism is flowering. Flowering is defined by the switch from the vegetative to the reproductive phase. negative regulation of post-embryonic development negative regulation of response to stimulus regulation of short-day photoperiodism, flowering biological regulation