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deep down

deep down

117 3.5
In your real feelings or beliefs that you do not show
  • idiom
  • Informal
translation icon : en el fondo
  • I think deep down I kind of knew I had these things.
  • deep down, I think
  • deep down, I know

I would suggest that deep down you still have this connection.

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Examples

  • Life felt very hard and I knew deep down that something had to give.

  • If it's real enough, he'll believe it, because deep down he'll want to.

    Fiction book (1996)
  • I would suggest that deep down you still have this connection.

  • But we all know that deep down you feel like you could pull anyone.

  • You know, deep down, I think I always kind of knew.

  • Charles would have laughed at them except he knew deep down that something bad had happened.

    Fiction book (1991)
  • I believe that everyone deep down knows what's right and what's wrong.

  • I know deep down, you're not all bad.

  • Deep down, I knew I wasn't abandoned.

  • I believe that everyone deep down knows what's right and what's wrong.

Synonyms

at heart
vsdeep down
77 3.5

Really being a certain kind of person despite how someone seems

focuses on private feelings or beliefs rather than outward behaviour
at bottom
vsdeep down
  • Formal
3 6.6

Basically what is most true about someone or something

focuses on inner feelings and beliefs rather than general fundamentals
in heart of hearts
vsdeep down
  • Informal
7.5

To feel something deep inside but not say it

is felt sincerely but with less intense private emphasis

Antonyms

18 4.4

As something looks from the outside, not as it really is

14 5.3

In a way that only looks at the surface and not deeply

How Deep

to its core
4 5.6
deep down
  • Informal
117 3.5
inwardly
16 4.5

Surface Forms

deep down positive

Morphology

deep + down

The meaning 'what someone really feels or believes' is a direct compositional combination of 'deep' (intensely, at a great depth) and 'down' (inward/at a lower/inner level), yielding 'deeply inside'. This adverbial inwardness is cross-linguistically common (e.g., Spanish 'en el fondo', French 'au fond') and follows productive English patterns, so a B1 learner who knows both constituents would likely infer the meaning.

Etymology

Deep down comes from the idea that something is deep and far down inside you, like a feeling at the bottom of a well or inside your chest. So deep down means 'what someone really feels or believes' even if they don't show it.