get to the bottom of something
Meaning
To discover the true facts, ultimate reason, or hidden cause behind a mysterious problem or situation.
Origin
Imagine a ship charting unknown waters, needing to find the seabed to understand the depth and navigate safely, or a well-digger tirelessly excavating until hitting the water source at the lowest point. This literal act of physically reaching the ultimate depth of something to discover its fundamental nature or resource lies at the heart of the phrase. By the 17th century, this vivid imagery of probing deep and finding a foundation had elegantly transferred from the tangible world of exploration and physical limits to the abstract realm of puzzles and problems, becoming a powerful metaphor for uncovering the ultimate truth or cause behind any perplexing situation.
Examples
- The detective vowed to get to the bottom of the mysterious disappearance, spending weeks interviewing witnesses.
- We need to get to the bottom of why our sales figures have been declining so sharply this quarter.