deep adjective Meaning in the Cambridge Learner’s Dictionary Cambridge dictionaries logo
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Meaning of “deep” - Learner’s Dictionary

deep

adjective     /diːp/
TOP TO BOTTOM
A2 having a long distance from the top to the bottom: The water is a lot deeper than it seems.Measurements in generalHigh, tall and deep
FRONT TO BACK
having a long distance from the front to the back: How deep are the shelves?Measurements in general
one metre/6 ft, etc deep
B2 one metre/6 ft, etc from the top to the bottom, or from the front to the back: This end of the pool is two metres deep.Measurements in generalHigh, tall and deep
FEELING
B2 A deep feeling is very strong: deep affection/regretStrong feelings
SOUND
B2 A deep sound is low: a deep voiceTechnical music termsDescribing qualities of the human voice
SERIOUS
serious and difficult for most people to understand: a deep and meaningful conversationComplexityDifficult to understand
a deep sleep
B2 sleep that it is difficult to wake someone fromSleep and sleeping
COLOUR
B1 A deep colour is strong and dark: deep brown eyesThe qualities of colour
take a deep breath
B2 to fill your lungs with air: Take a deep breath and relax.Breathing and stopping breathing
deep in thought/conversation
giving all of your attention to what you are thinking or talking about, and not noticing anything else →  See also throw sb in at the deep end , be in deep water Paying attention and being carefulCautious and vigilantThinking and contemplatingDeep in thought
(Definition of deep adjective from the Cambridge Learner’s Dictionary © Cambridge University Press)
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