toilsome

Toilsome, a.

Attended with toil, or fatigue and pain; laborious; wearisome; as, toilsome work. What can be toilsome in these pleasant walks Milton. -- Toil"some*ly, adv. -- Toil"some*ness, n.

Shades of meaning

Fernald has no entry of its own for toilsome; he lists it under difficult.

Where he writes about it:

That which is laborious or toilsome simply requires the steady application of labor or toil till accomplished; toilsome is the stronger word. — from difficult

Synonyms

difficult arduous exhausting hard laborious onerous severe trying

Antonyms

easy facile light pleasant slight trifling trivial

etymology Webster’s online