Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “deep”

See all translations

deep

adjective uk   /diːp/ us  

deep adjective (LONG WAY DOWN)

A2 going or being a long way down from the top or surface, or being of a particular distance from the top to the bottom: a deep well/mine a deep river/sea a deep cut The hole is so deep you can't see the bottom. The water's not deep here - look, I can touch the bottom. Drill 20 holes, each 2 inches deep. The water's only ankle/knee/waist-deep, so we'll be able to get across the river easily. Take a few deep breaths (= breaths that fill the lungs with air) and calm down.
More examples

deep adjective (STRONGLY FELT)

B2 very strongly felt or experienced and usually lasting a long time: Their son has been a deep disappointment to them. We're in deep trouble. She fell into a deep sleep.
More examples

deep adjective (LOW)

B2 (of a sound) low: a wonderfully deep voice
More examples

deep adjective (COMPLICATED)

C2 showing or needing serious thought, or not easy to understand: His films are generally too deep for me.
More examples

deep adjective (FRONT TO BACK)

B2 If something is deep, it has a large distance between its edges, especially between its front and back edges: Is the alcove deep enough for bookshelves? The wardrobe is 2 m high, 1 m wide and 60 cm deep. By midnight, there were customers standing six deep (= in six rows) at the bar.deep in/inside/within sth B1 near the middle of something, and a long distance from its edges: Little Red Riding Hood's grandmother lived in a house deep in the forest.

deep adjective (DARK)

B1 (of a colour) strong and dark: The sky was deep blue.

deep

deep

(Definition of deep from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of deep?
Add Cambridge dictionaries to your browser to your website

Definitions of “deep” in other dictionaries

Word of the Day

escapism

a way of avoiding an unpleasant or boring life, especially by thinking, reading, etc. about more exciting but impossible activities

Word of the Day

Lies, lies, lies!

by Kate Woodford,
February 25, 2015
​​​ According to sociologists (=people who study the relationships between people living in groups), we are good at lying. As a species, we have developed a remarkable ability to deceive each other (= persuade each other that something false is true). Being able to say things that are not true can help with

Read More 

showrooming noun

February 23, 2015
the activity of examining a product in a physical store and then making the purchase with an online retailer Amazon’s new smartphone is specifically designed to make showrooming fast and easy.

Read More