toilsome

adj : characterized by toilsome 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"

[syn: {arduous}, {backbreaking}, {grueling}, {gruelling},

{hard}, {heavy}, {laborious}, {labourious}, {punishing}]