TOILSOME
arduous, backbreaking, grueling, gruelling, hard, heavy, laborious, operose, punishing, toilsome
(adjective) characterized by effort to the point of exhaustion; especially physical effort; “worked their arduous way up the mining valley”; “a grueling campaign”; “hard labor”; “heavy work”; “heavy going”; “spent many laborious hours on the project”; “set a punishing pace”
Source: WordNet® 3.1
Etymology
Adjective
toilsome (comparative more toilsome, superlative most toilsome)
Requiring continuous physical effort; laborious.
Source: Wiktionary
Toil"some, a.
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition