ponderous

(adjective)

adjective

1. slow and laborious because of weight

- ponderous prehistoric beasts

- a ponderous yawn

Similar word(s): heavy, lumbering

2. having great mass and weight and unwieldiness

- a ponderous stone

- a ponderous burden

- ponderous weapons

Similar word(s): heavy

3. labored and dull

- a ponderous speech

Similar word(s): uninteresting