A cliché that means deep thought.
The action of people thinking underwater.
Main Entry: 1fath·om
Etymology: Middle English fadme, from Old English fæthm outstretched arms, length of the outstretched arms; akin to Old Norse fathmr fathom, Latin patEre to be open, pandere to spread out, Greek petannynai
Date: before 12th century
1 : a unit of length equal to six feet (1.83 meters) used especially for measuring the depth of water
2 : COMPREHENSION
The first year composition students could not fathom another way to write without the use of trite words.