Burdensome

Part of speech: adjective (a.)

Grievous to be borne; causing uneasiness or fatigue; oppressive. The debt immense of endless gratitude So burdensome. Milton.

Synonyms: Heavy; weighty; cumbersome; onerous; grievous; oppressive; troublesome. Bur"den*some*ly, adv. Bur"den*some*ness, n.