perfunctory

Done routinely and with little interest or care.

Acting with indifference; showing little interest or care.

Done mechanically or without interest or zeal, and merely for the sake of getting rid of the duty; done in a half-hearted or careless manner, or so as to conform to the letter but not to the spirit; careless; negligent.

Done merely to get rid of a duty; performed mechanically and as a thing of rote; done in a careless and superficial manner; characterized by indifference.

Hence: Mechanical; indifferent; listless; careless.

Done merely to discharge a duty; performed mechanically and as a thing of rote; done in a careless and superficial manner; characterized by indifference; as, perfunctory admonitions; aspiring only to minimum standards.

as a formality only

hasty and without attention to detail; not thorough