Learn how to use the comparative “slimmer” and superlative “slimmest” with example sentences and differences.

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Notes from a Native English Speaker

Comparative adjectives help us to describe how good or bad something is when compared to something else. For example, something is taller than something else. Superlative adjectives help us to describe something as having the most or least of a particular characteristic within a group. This makes it easier and more accurate to talk about and compare things.

What is the comparative form of “slimmest”?

The comparative form of “slimmest” is “slimmer”.

Example

She is slimmer than her sister.

Example

He lost weight and now he looks slimmer.

What is the superlative form of “slimmest”?

The superlative form of “slimmest” is “slimmest”.

Example

Among all the dresses, the black one is the slimmest.

Example

The supermodel is known for having the slimmest figure in the industry.

Why is this expression not used with most, more?

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

Does this expression have an irregular comparative/superlative form?

Slim does not have an irregular comparative or superlative form. It follows the standard pattern for forming comparatives and superlatives. So, to summarize: Comparative: SlimSlimmer Superlative: SlimSlimmest

Expressions with similar meanings to “slimmer”

Used to describe someone or something that has less body fat or is more narrow in shape

Example

The model had a thinner waist than the mannequin.

Used to describe someone who has less body fat and more muscle definition

Example

After months of training, he became leaner and more fit.

A slightly formal way of expressing a slim or graceful appearance

Example

The ballerina had a more slender figure than the other dancers.

Expressions with similar meanings to “slimmest”

Similar to slimmest, this emphasizes having the least amount of body fat or being the most narrow in shape

Example

The wire is the thinnest part of the sculpture.

Used to describe someone who has the least amount of body fat and the most muscle definition

Example

The bodybuilder was declared the leanest competitor in the competition.

A slightly formal way of expressing the highest level of slimness or gracefulness

Example

The supermodel had the most slender figure on the runway.

Using than with comparative “slimmer”

When using the comparative form slimmer to compare two things, you would use than to connect the two parts of the comparison: Example: "She is slimmer than her sister." Here, than is used to show that the slimness of 'she' is greater than the slimness of her sister.

How can I use this expression in context?

“slimmer” and “slimmest” can be used in a variety of situations to compare speed.
  • 1Body Shape

    She has a slimmer waist than her friend.

    She has a slimmer waist than her friend.

  • 2Clothing

    The small size is slimmer than the medium size.

    The small size is slimmer than the medium size.

  • 3Buildings

    The tower is the slimmest structure in the city.

    The tower is the slimmest structure in the city.

  • 4Electronics

    The new smartphone is slimmer than the previous model.

    The new smartphone is slimmer than the previous model.

  • 5Animals

    The snake is the slimmest reptile in the jungle.

    The snake is the slimmest reptile in the jungle.

Related idioms and phrases

As thin as a rail

Describing someone who is extremely thin or skinny.

Example

She lost so much weight that she became as thin as a rail.

Skinny as a beanpole

Describing someone who is very thin and tall.

Example

He grew taller but remained skinny as a beanpole.

Pencil-thin

Describing something that is very thin, like the tip of a pencil.

Example

The line drawn by the artist was pencil-thin.

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