fathom
/ˈfæðəm/
verb
- To understand or comprehend something deeply.
- I cannot fathom why she would quit her job without another one lined up.
- It's hard to fathom the scale of the universe.
- He tried to fathom the meaning of the ancient poem.
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noun
- A unit of length equal to six feet, used mainly for measuring the depth of water.
- The map showed a depth of 15 fathoms near the reef.
- The sailor dropped the line and found the water was 10 fathoms deep.
- The submarine descended to a depth of 200 fathoms.