ponderous

Synonyms: awkward bulky burdensome clumsy cumbrous dull elephantine graceless hefty huge laborious lifeless lumbering massive onerous oppressive substantial troublesome unhandy unwieldy weighty

Antonyms: airy buoyant delicate light unburdensome

Synonyms: arid barren cardboard dry dull heavy humdrum labored lifeless long-winded monotonous pedantic pedestrian plodding prolix stiff stilted stodgy stuffy vapid verbose wooden

Antonyms: fun light