deep
deep
adverb
Far down or far into something.
"He dug deep into the earth."
adjective
Extending a long way from the top or surface downwards.
"The lake is very deep here."
adjective
Very intense, profound, or strongly felt.
"She was in a deep sleep."
Thesaurus
Synonyms: late, thick, intense, wide, broad, profound, sound, heavy, wakeless, bass, low-pitched, low
Antonyms: shallow