苦水

bitter water (e.g. mineral water containing sulfates) / suffering / digestive fluids rising from stomach to the mouth / fig. bitter complaint

bitter / hardship / pain / to suffer / to bring suffering to / painstakingly

surname Shui

water / river / liquid / beverage / additional charges or income / (of clothes) classifier for number of washes

to pour out one's grievances

to have bitter digestive fluids rising to the mouth / fig. to complain bitterly / to pour out one's sufferings