toilsome Synonyms

hard laborious heavy operose backbreaking grueling gruelling punishing arduous tight thorny taxing stressful strenuous sisyphean rugged rough severe tiring drudgy back-breaking weighty wearying wearisome wearing wayworn uphill trying tricky tough toilful profound ponderous palestric formidable exhausting exacting elaborate difficult difficile demanding complicated complex challenging burdensome grave grievous grinding painful oppressive