ponderous

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"

......... तुम्हारा जीवन नीरस बन रहा है; यह मुझे दुख है ही।

His ponderous attempts at wit did not make anyone laugh.