The word "depths" is usually used to refer to the lowest point in something, such as the ocean or a hole. However, there are various synonyms that can be used interchangeably with the word depths. These include the terms deepness, profundity, thickness, intensity, immensity, and bottomless. Each of these words encompasses a different aspect of the depths, such as the thickness of something or the intensity of an emotion. When using synonyms for "depths", it is important to consider the context and choose a word that accurately conveys the intended meaning.