beyond (one's) depth

beyond (one's) depth

1. In water that is too deep for one to swim in. The lifeguard had to save the girl who had gotten beyond her depth in the pool.
2. Advanced beyond one's ability to understand or make sense of the subject matter or task at hand. The stuff they're teaching in this advanced math class is beyond my depth.
See also: beyond, depth
Farlex Dictionary of Idioms.

beyond one's depth

 
1. Lit. in water that is too deep. Sally swam out from the beach until she was beyond her depth. Jane swam out to get her even though it was beyond her depth, too.
2. Fig. beyond one's understanding or capabilities. I'm beyond my depth in calculus class. Poor John was involved in a problem that was really beyond his depth.
See also: beyond, depth
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • beyond depth
  • great beyond
  • the Great Beyond
  • beyond some emotional response
  • a bit too much
  • horizon
  • beyond the horizon
  • get beyond a joke
  • be/get/go beyond a joke
  • beyond (one's) wildest dreams