ponderous
Pronunciation:
/ˈpɒn.dəɹ.əs//ˈpɑn.dɚ.əs/adjective
Definitions
Heavy, massive, weighty.
(by extension) Serious, onerous, oppressive.
Clumsy, unwieldy, or slow, especially due to weight.
Dull, boring, tedious; long-winded in expression.