back-breaking

عمل مرهق

Refers to any form of extremely demanding physical job or task.

Similar to 'work', but often implies manual, unskilled, and prolonged effort.

كدح يكسر الظهر

More literary or formal than 'work' or 'labour', emphasizing the wearisome and unpleasant nature of the hard work.

يشير إلى عمل شاق للغاية ومتطلب جسديًا.