The idiom "in hot water" refers to being in a difficult or troublesome situation, often implying that one is facing consequences or being reprimanded for their actions. It conveys the idea of being in serious trouble or facing adversity. Here are a few more idioms related to difficult situations or being in trouble:
"Between a rock and a hard place": Being caught in a dilemma where there are no good options or choices available.
"In deep water": Similar to "in hot water," it signifies being in a difficult or challenging situation.
"Up against the wall": Referring to being in a difficult or desperate situation with limited options or resources.
"Between the devil and the deep blue sea": Being caught between two equally unfavorable choices or circumstances.
"In a tight spot": Describing a situation where one is in a difficult or challenging position, often with limited time or resources.
These idioms are used to express the idea of facing adversity, trouble, or difficulty, emphasizing the challenges and predicaments people may encounter in various situations.