Definition of overdeepen in English:

overdeepen

Pronunciation /ˌəʊvəˈdiːp(ə)n/

verb

Geography
  • 1To erode (a valley) more deeply by glacial action than would occur by water erosion alone.

  • 2More generally: to deepen excessively or abnormally; especially to further deepen by erosion.

Origin

Early 20th century; earliest use found in Science. From over- + deepen, probably after overdeepening.