Any process that stops, prevents or reduces the frequency, rate or extent of snRNA transcription mediated by RNA polymerase II.
Synonyms:
exact_synonym:
down regulation of snRNA transcription from Pol II promoter; down regulation of snRNA transcription from RNA polymerase II promoter; downregulation of snRNA transcription from Pol II promoter; downregulation of snRNA transcription from RNA polymerase II promoter; negative regulation of snRNA transcription from Pol II promoter; negative regulation of snRNA transcription from RNA polymerase II promoter
narrow_synonym:
inhibition of snRNA transcription from Pol II promoter; inhibition of snRNA transcription from RNA polymerase II promoter