苦水

苦水	kǔ shuǐ	bitter water (e.g. mineral water containing sulfates) / suffering / digestive fluids rising from stomach to the mouth / fig. bitter complaint
苦	kǔ	bitter / hardship / pain / to suffer / to bring suffering to / painstakingly
水	Shuǐ	surname Shui / Shui ethnic group
水	shuǐ	water / (after a name) ... River / to swim (used mostly in 会水 and 水性) / (coll.) lacking in substance; shoddy / (bound form) additional cost; extra income / classifier for washings of a garment