When it comes to describing a task that requires a lot of effort, "thirsty work" is a common phrase that comes to mind. However, there are plenty of synonyms to switch things up and keep your language interesting. If you feel like your work is "hard yakka," "grueling," or "sweaty," you might be describing the same sort of task that leaves you afflicted by "cotton mouth," "dehydration," or "parchedness." But sometimes, a more colorful or quirky word might be just the ticket. For example, you could describe a difficult project as "a tough nut to crack," "an uphill battle," or "a tall order." Experiment with different phrases and see which ones resonate with you and your audience.