Learn how to use the comparative “less likely” and superlative “least likely” 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 “unlikely”?

The comparative form of “unlikely” is “less likely”.

Example

It is less likely to rain tomorrow compared to today.

Example

She is less likely to win the competition than her experienced opponent.

What is the superlative form of “unlikely”?

The superlative form of “unlikely” is “least likely”.

Example

Out of all the candidates, she is the least likely to get the job.

Example

This scenario is the least likely to happen.

Why is this expression not used with most, more?

"Most" and "more" are not used with "unlikely," "less likely," and "least likely." Instead, "less likely" and "least likely" are the appropriate comparatives and superlatives for "unlikely." Using "most unlikely" or "more unlikely" would be grammatically incorrect.

Does this expression have an irregular comparative/superlative form?

"Unlikely" follows the regular pattern for forming comparatives and superlatives: - Comparative form: Unlikely → Less likely - Superlative form: Unlikely → Least likely

Expressions with similar meanings to “less likely”

Used to describe something that is not likely to happen or be true.

Example

It is highly improbable that he will arrive on time.

Used to indicate uncertainty or skepticism about the likelihood of something happening.

Example

It is doubtful that they will approve the proposal.

Used to describe something that has a very low probability of occurring.

Example

The chances of finding a treasure in this area are remote.

Expressions with similar meanings to “least likely”

Used to describe something that has the lowest probability of happening.

Example

Among all the options, this outcome is the most improbable.

Used to indicate extreme skepticism or disbelief about the likelihood of something happening.

Example

It is highly doubtful that they will ever reconcile.

Used to describe something that has an extremely low probability of occurring.

Example

The chances of winning the lottery are extremely remote.

Using than with comparative “less likely”

When using the comparative form "less likely" to compare two things, you would use "than" to connect the two parts of the comparison: Example: "She is less likely to win the competition than her experienced opponent." Here, "than" is used to show that the likelihood of her winning is lower compared to the likelihood of her opponent winning.

How can I use this expression in context?

“less likely” and “least likely” can be used in a variety of situations to compare speed.
  • 1Weather

    It is less likely to snow in April than in December.

    It is less likely to snow in April than in December.

  • 2Outcomes

    Among all the scenarios, this one is the least likely.

    Among all the scenarios, this one is the least likely.

  • 3Chances

    He is less likely to take risks compared to his adventurous friends.

    He is less likely to take risks compared to his adventurous friends.

  • 4Events

    It is the least likely event to occur during the conference.

    It is the least likely event to occur during the conference.

Related idioms and phrases

Against all odds

To achieve success despite great difficulties or challenges.

Example

She managed to win the race against all odds.

Fat chance

Used sarcastically to indicate that something is highly unlikely to happen.

Example

You think they will agree? Fat chance!

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