deep

/ˈdēp/

Middle English dep, from Old English dēop; akin to Old High German tiof deep, Old English dyppan to dip

adjective

  1. extending far from some surface or area: such as

  2. extending far downward

  3. extending well inward from an outer surface

a deep well

broad wide deep mean having horizontal extent. broad and wide apply to a surface measured or viewed from side to side. wide is more common when units of measurement are mentioned

adverb

  1. to a great depth : deeply

  2. far on : late

  3. near the outer limits of the playing area

still waters run deep

noun

  1. a vast or immeasurable extent : abyss

  2. the extent of surrounding space or time

  3. ocean