くさkusaru
1.

To undergo a process where organic matter, such as food or plants, deteriorates due to bacterial action, resulting in an unpleasant smell or an inedible state.

2.

To experience a decline in quality or function due to neglect, resulting in a state where something becomes useless or ineffective.

3.

To reflect a loss of vitality or moral integrity in individuals or groups, indicating a degradation of character or purpose.

4.

To feel disheartened or to lose motivation due to circumstances not aligning with one's expectations, leading to a sense of stagnation or despair.

5.

To describe an action or behavior in a derogatory manner, indicating that it is contemptible or undesirable.

Example:

これらのオレンジは腐っている。

くさkusaるほどruhodo
1.

The expression describes a situation where there is such a large quantity of something that it exceeds what can reasonably be used or consumed, implying an abundance that goes to waste.

2.

It conveys the idea of having an excessive amount of resources, such as time or money, to the point that they could be discarded without consequence.

3.

It suggests a state of overflowing abundance, where the sheer volume of items or opportunities becomes almost meaningless due to their overabundance.