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deep

Meaning in simple English

US /diːp/

deep means: Going a long way down from the top or surface.

adjective

LONG WAY DOWNA2

Going a long way down from the top or surface.

  • The pool is deep.
  • They dug a deeper hole for the tree.
  • Is this the deepest part of the lake?

Opposites: shallow

Common phrases: deep water, deep hole, deep lake, deep pool

FAR INSIDEB1

Situated a long way inside something or far below its surface.

  • The plant has deep roots.
  • The bullet caused a deep wound.
  • Doctors examined the deeper layers of muscle.

Opposites: superficial

Common phrases: deep roots, deep tissue, deep wound

LOW SOUNDB1

Having a low sound, like a large drum or a man’s low voice.

  • He has a deep voice.
  • A deep rumble came from the engine.
  • Her voice grew deeper as she sang.

Similar words: low, low-pitched

Opposites: high

Common phrases: deep voice, deep sound, deep rumble

LARGE REDUCTIONB2

Very large, when describing a reduction in prices, spending, or amounts.

  • The shop offers deep discounts.
  • Schools face deep cuts in funding.
  • Even deeper price reductions failed to attract buyers.

Similar words: large, substantial, steep

Opposites: small

Common phrases: deep discounts, deep cuts, deep reductions

IMPORTANT IDEASB2

Having important ideas or meaning that require careful thought to understand.

  • That is a deep question.
  • Her poems have a deeper meaning.
  • We had a deep conversation about happiness.

Similar words: profound, thoughtful

Opposites: superficial, shallow

Common phrases: deep thoughts, deep meaning, deep questions

adverb

FAR INTOB1

A long way down, inside, or into something.

  • The treasure lay deep underground.
  • They travelled deep into the mountains.
  • Her words stayed buried deep in my memory.

How to use it: deep in/into something (The hikers went deep into the forest.)

Similar words: far

Common phrases: deep underground, deep inside, deep into something

THINK CAREFULLYC2

With careful thought about important ideas, beyond what is immediately obvious.

  • He thought deep about the question.
  • She pondered long and deep before answering.
  • To understand this poem, you must think deep.

Similar words: deeply, profoundly

Opposites: superficially

Common phrases: think deep, ponder deep, reflect deep

noun

DEEP SEAC1

The parts of a sea or lake that are far below the surface.

  • Strange fish live in the deep.
  • A huge creature rose from the deep.
  • The ship vanished into the dark deep.

Similar words: depths

Common phrases: the deep, of the deep, from the deep

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