Answer:

deepest

Answer	Crossword Clue
DEEPEST	Least shallow
DEEPEST	Like some apologies
DEEPEST	Most philosophical

DEEPEST	Most profound
DEEPEST	Superlatively profound
DEEPEST	Farthest down
DEEPEST	Least trivial
DEEPEST	Most mysterious
DEEPEST	Like a bass' voice
DEEPEST	Lying within the farthest recesses.
DEEPEST	Most abstruse.

DEEPEST	Most intense.
DEEPEST	Most profound.
DEEPEST	Adjective for the Pacific.
DEEPEST	Most recondite.
DEEPEST	One adjective for the Pacific.
DEEPEST	Least obvious.
DEEPEST	Most abstruse
DEEPEST	Like the Mariana Trench

DEEPEST	Lowest of 500 tepees
DEEPEST	Like some sympathies
DEEPEST	Like the divers' end of the pool
DEEPEST	"The First Cut is" this?
DEEPEST	Most inscrutable
DEEPEST	Most thought provoking
DEEPEST	Most intense, as sadness