The definition of deep is going far down or far away, something strongly felt, or something that is hard to understand.(adjective)
Deep means a part of water, earth or space that is known to be one of most extreme known to science.(noun)
An example of deep is a part of the ocean that goes down more than 18,000 feet below the surface.
Deep is defined as at a great depth or a long period of time or space.(adverb)
See deep in Webster's New World College Dictionary
Origin: ME dep < OE deop, akin to Ger tief, Goth diups < IE base *dheub-, deep, hollow > dip, dump
Origin: ME dep < OE deop
Origin: ME depe < OE deope
See deep in American Heritage Dictionary 4
adjective deep·er, deep·est
Origin: Middle English dep
Origin: , from Old English dēop; see dheub- in Indo-European roots.
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