Definition

Adverb * In reality; at heart; fundamentally; in one's true nature or feelings: Used to emphasize the true, often hidden or contrasting, character, feeling, or quality of a person or situation.

Usage

The phrase "deep down" is used to contrast an outward appearance, action, or temporary state with a more fundamental, genuine, or persistent inner reality. It suggests that the true nature or feeling is not immediately obvious on the surface. * It typically modifies an adjective or a clause describing a state of being. * It is often used in structures like "deep down, [subject] is/feels..." or "[subject] is, deep down, ...".

Examples

• He acts tough, but deep down he's very sensitive.
• Deep down, she knew the decision was a mistake.
• The movie is a comedy, but it's deep down a very sad story.
• I was angry, but deep down I understood his reasons.

Advanced Usage

• "Deep down inside": A more emphatic variant with the same meaning.
  • Deep down inside, he always wanted to be an artist.
• Used to introduce a concessive or contrasting truth.
  • They argued constantly, but deep down they loved each other deeply.

Variants and Related Words

• At heart: Having the same core meaning.
  • He's a traditionalist at heart.
• Fundamentally: In a basic and important way (more formal).
  • The two theories are fundamentally different.
• Inwardly: In one's mind or soul; privately.
  • She was inwardly delighted.

Synonyms

• At heart
• Essentially
• Basically
• In truth
• Really

Related Idioms

• Know/feel in one's heart of hearts: To know or feel something with absolute certainty deep within oneself.
  • In her heart of hearts, she knew he wouldn't come back.

Adverb

1. in reality
   • she is very kind at heart