The idiom "snow under" means to work very hard or be extremely busy, often to the point of being overwhelmed or stressed. It can also mean to perform well under pressure or in a difficult situation.

The idiom "in the heat of the moment" refers to a situation where emotions are strong and decision-making is impulsive or influenced by those emotions.

The idiom "sea change" refers to a significant transformation or a radical shift in something. It is often used to describe a sudden and dramatic change in circumstances, behavior, or attitudes.

The idiom "cave in" means to give in or yield to pressure, especially when the individual or group is reluctant to do so. It can also mean to accept something without question or resistance.

The idiom "in the ascendant" means to be on an upward course or progress. It refers to a situation, person, or thing that is increasing in power, importance, or influence.