So lacking in interest as to cause mental weariness; SYN. deadening, dull, ho-hum, irksome, slow, tedious, tiresome, wearisome.
Lacking in qualities that seize the attention or strike the imagination; commonplace; especially; tediously dull in speech or manner
ETYM Latin taediosus, from taedium. Related to Tedium.
Tiring; so monotonous as to be wearisome.
In an insipid manner.
In an exhausting manner, in a boring manner