Learn how to use the comparative “deeper” and superlative “deepest” with example sentences and differences.

What is the comparative form of “deep”?

The comparative form of “deep” is “deeper”.

Example

The well is deeper than I thought.

Example

She dived deeper into the ocean to explore the coral reef.

What is the superlative form of “deep”?

The superlative form of “deep” is “deepest”.

Example

The Mariana Trench is known as the deepest part of the ocean.

Example

Her love for him was the deepest she had ever felt.

Why is this expression not used with most, more?

'Most' and 'more' are generally not used with deep, deeper, and deepest. They’re considered regular comparatives and superlatives. The forms 'more deep' and 'most deep' are not used because they sound awkward. Instead, deeper and deepest are the correct and preferred forms to use.

Does this expression have an irregular comparative/superlative form?

Deep does not have an irregular comparative or superlative form. It follows the standard pattern for forming comparatives and superlatives. So, to summarize: Comparative: Deep → Deeper Superlative: Deep → Deepest

Expressions with similar meanings to “deeper”

more profound

Used to describe something that is deeper in terms of meaning or significance

Example

His words had a more profound impact on me than I expected.

more intense

Used to indicate something that is deeper in terms of emotion or feeling

Example

The love they shared grew more intense with each passing day.

more extensive

A slightly formal way of expressing increased depth or coverage

Example

The research delved into more extensive analysis of the topic.

Expressions with similar meanings to “deepest”

most profound

Similar to deepest, this emphasizes both depth and significance

Example

The book had the most profound impact on her life.

most intense

Used to describe the highest level of depth in terms of emotion or feeling

Example

Their argument reached its most intense point.

most extensive

A slightly formal way of expressing the highest level of depth or coverage

Example

The report provided the most extensive analysis of the issue.

Using than with comparative “deeper”

When using the comparative form deeper to compare two things, you would use than to connect the two parts of the comparison: Example: "The well is deeper than I thought." Here, than is used to show that the depth of the well is greater than the initial expectation.

How can I use this expression in context?

“deeper” and “deepest” can be used in a variety of situations to compare speed.

• 1. Physical Depth

  The hole is deeper than it appears.

  The hole is deeper than it appears.

• 2. Emotional Depth

  Her love for him grew deeper over time.

  Her love for him grew deeper over time.

• 3. Intellectual Depth

  The professor's lecture delved deeper into the subject matter.

  The professor's lecture delved deeper into the subject matter.

• 4. Spiritual Depth

  He embarked on a journey to explore the deepest realms of his soul.

  He embarked on a journey to explore the deepest realms of his soul.

• 5. Creative Depth

  The artist's work reflects the deepest aspects of human experience.

  The artist's work reflects the deepest aspects of human experience.

Related idioms and phrases

In deep water

In a difficult or challenging situation.

Example

After losing his job, he found himself in deep water financially.

Still waters run deep

Quiet or calm people often have a strong or complex personality.

Example

Don't underestimate her. Still waters run deep.

Jump in at the deep end

To start a new and challenging task without any preparation or experience.

Example

He decided to jump in at the deep end and take on the leadership role.