negative regulation of delayed rectifier potassium channel activity
down regulation of delayed rectifier potassium channel activity
exact
down-regulation of delayed rectifier potassium channel activity
exact
downregulation of delayed rectifier potassium channel activity
exact
inhibition of delayed rectifier potassium channel activity
narrow
Any process that stops, prevents or reduces the frequency, rate or extent of delayed rectifier potassium channel activity.
GO:1902259
regulation of delayed rectifier potassium channel activity
is_a
GO:1903817
negative regulation of voltage-gated potassium channel activity
is_a