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to fathom

to fathom

1 8.6
To measure how deep water is using a heavy line
  • verb
  • /ˈfæðəm/
  • Specialized
translation icon : sondear
  • The fates of the men and women of the colony haven't been fathomed, despite 400 years of search and study.
  • fathom the depth

Examples

  • Rath pointed out the buildings one by one—so many buildings that I could not, without his help, have fathomed the uses for them all.

    Fiction book (1993)
  • "Drizzt bit his lip, realizing that he would do well to hold his silence until he better fathomed the depth of this unexpected meeting."

    Fiction book (1992)
  • Everything attempts to deliver to the public science and humans' ways of fathoming nature.

    Academic text (2005)
  • What is yet impossible in fiction might be seen to be that which has yet to be fathomed, yet to be conceived.

    Academic text (1995)
  • The immense nature of the cleanup and restoration that the power companies have had to deal with cannot be fathomed by any of us.

    Blog text (29)
  • Whether this was intended as an expression of affection or an assault was not clear, and Clootie did not worry about it; he was too busy fathoming the depths of Odo's ignorance and stupidity.

    Fiction book (1993)
  • There is some pleasure in blatant self-destruction, but shelter is a newer and deeper pleasure—one not yet fully fathomed.

    Fiction book (1999)
  • The sailors were able to fathom the ocean's depth using a long rope marked in feet.

  • To understand how deep the lake was, he decided to fathom it with a measuring line.

  • Using a weighted line, they could fathom the depths of the mysterious underwater trench.

Synonyms

to sound
vsto fathom
  • Specialized
195 8.4

To measure how deep water is using a line

has identical meaning but is an alternative form
to plumb
vsto fathom
1 6.7

To measure depth or check if something is vertical using a weight on a string

focuses only on measuring depth with a sounding line not vertical checks

Idioms

To understand how serious or important something is

Phrasal Verbs

To understand the reason for something that seems puzzling

Compounds

square fathom
  • Archaic
9.1

An area the size of a square six feet on each side

Surface Forms

fathom infinitive
fathomed past
fathomed past participle
fathoming present participle
fathoms third person singular

Etymology

The word fathom comes from an old English word fæðm meaning 'outstretched arms', and early sailors measured the sea by counting arm-lengths with a weighted line. That is why to fathom the water means to measure its depth.