Dullardly

When I called, some dullardly gentleman picked up the telephone, announced the name of his fine establishment, the Pigpen, then yelled to someone nearby […].

I believe pop music is too important to be left to the leaden, dullardly and unambitious.

Then I shall say it so: in the years since their lucid moments of appreciation, they have let themselves descend into dullardly obtuseness, into vapid venality.