backbreaking Definition

arduous, laborious, toilsome, grueling, hard, punishing, heavy, gruelling, effortful, labourious, menial, tedious, thankless, torturous, sisyphean, strenuous, unrewarding, herculean, unskilled, unglamorous, painstaking, monotonous, burdensome, onerous, wearisome, hardscrabble, painful, stressful, unproductive, miserable, hellacious, interminable, relentless, hellish, unforgiving, brutal, unendurable, unbearable, sweaty, tough, toilful, moliminous, exhausting, demoralizing, excruciating, semiskilled, laborless, indentured, plough on, meager, labor intensive, operose, dirty, unremunerative, gritty, travailous, trampoose, unstimulating, remunerative, rickety, uncomplaining, splintery, tiresome, painable, unworked, grimy, ungodly, callused, numbing, daunting, improbable, sacrificing, migrant, wrenching, joyless, workful, unenviable, skilled, gimpy, hod, hard labor, longspun, subsistent, pogey, unmerciful, costly, gutty, mummifying, fulling, agonizing, perilous, epic, capped, scut work, overworked, horrid, workmanlike, tarpaper, xeric, unimaginably,