Deep
/diːp/noun
Extending far down from the top or surface; profound or intense.
Did you know?Deep is one of the oldest surviving English words, inherited from Proto-Germanic, and its ancient relatives still carry the same sense of sinking, plunging, and being far below the visible world.
Etymological Timeline
Proto-Indo-European
PIE
*dheub-
“to be deep, hollow, or sunken”
Proto-Germanic
PGmc
*deupaz
“deep, hollow, profound”
Old English
OE
dēop
“deep; profound; intense”
Old Norse
ON
djúpr
“deep”
Modern English
English
deep
“extending far downward; profound or intense”