ho-hum
adj.
so lacking in interest as to cause mental weariness
a boring evening with uninteresting people|the deadening effect of some routine tasks|a dull play|his competent but dull performance|a ho-hum speaker who couldn't capture their attention|what an irksome task the writing of long letters is|tedious days on the train|the tiresome chirping of a cricket|other people's dreams are dreadfully wearisome