Profound

adjective

prə'faʊnd

Adjective

far-reaching and thoroughgoing in effect especially on the nature of something
“profound social changes”
Similar:Fundamental
situated at or extending to great depth; too deep to have been sounded or plumbed
“the profound depths of the sea”
Similar:UnfathomedUnplumbedUnsounded
(of sleep) deep and complete
“fell into a profound sleep”
Similar:Heavy SoundWakeless
showing intellectual penetration or emotional depth
“the differences are profound”
“a profound insight”
“a profound book”
See also:IntenseScholarly
of the greatest intensity; complete
“a profound silence”
“a state of profound shock”
coming from deep within one
“a profound sigh”