adj. labored and dull; "a ponderous speech"

adj. slow and laborious because of weight; "the heavy tread of tired troops"; "moved with a lumbering sag-bellied trot"; "ponderous prehistoric beasts"; "a ponderous yawn"

adj. tediously repetitious or lacking in variety; "a humdrum existence; all work and no play"; "nothing is so monotonous as the sea"

adj. of large size for its weight

adj. weighing heavily on the spirit; causing anxiety or worry; "weighty problems"

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"- Edmund Burke; "tedious days on the train"; "the tiresome chirping of a cricket"- Mark Twain; "other people's dreams are dreadfully wearisome"

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"- Edmund Burke; "tedious days on the train"; "the tiresome chirping of a cricket"- Mark Twain; "other people's dreams are dreadfully wearisome"

adj. lacking interest or significance or impact; "an insipid personality"; "jejune novel"

adj. inducing mental lethargy; "a narcotic speech"

adj. lacking wit or imagination; "a pedestrian movie plot"

adj. (of a book) poorly written and not entertaining