deeply

/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

idiom

  1. to have given a lot of time and effort to something and care about it very much

She is deeply invested in this project and wants it to succeed.