Any process that stops, prevents or reduces the frequency, rate or extent of ATP-dependent DNA helicase activity.
Synonyms:
exact_synonym:
down regulation of ATP-dependent DNA helicase activity; down regulation of DNA helicase activity; downregulation of ATP-dependent DNA helicase activity; downregulation of DNA helicase activity; negative regulation of ATP-dependent DNA helicase activity
narrow_synonym:
inhibition of ATP-dependent DNA helicase activity; inhibition of DNA helicase activity