There are a variety of synonyms for the phrase "reach the depths." Some of these phrases include reaching the lowermost depths, plumbing the depths, hitting rock bottom, descending to the abyss, and exploring the bottomless pit. Each of these phrases emphasizes the concept of reaching a point of extreme depth or magnitude, whether it be emotional, spiritual, or physical. The use of these synonyms can help to add depth and emotion to written or spoken works, making them more impactful to the reader or listener. Whether exploring the depths of their own psyche or the depths of the ocean, these phrases are useful tools for writers and speakers alike.