A unique or An unique: Which Is Correct?

Updated 2026-10-12 · Which One Is Correct editorial team

Quick answer: When writing in English, you must always use the phrase a unique instead of an unique. This rule holds true because the word unique begins with a consonant sound rather than a vowel sound, so it requires the article a. Writers often mistakenly use an unique by focusing on the letter u instead of the actual sound it produces. Following this standard ensures your writing remains clear and grammatically correct for any audience.

The Short Answer

The correct form to use is a unique, and you should never write an unique in standard English.

People frequently confuse this pair because the letter u is visually associated with vowel sounds, yet unique is pronounced with a consonant sound at the start.

Side-by-Side Comparison

Form	Status	Use it when
a unique	Correct	Always use this form when the word begins a clause or phrase.
an unique	Incorrect	Avoid this combination entirely as it violates standard spelling rules.
unique	Adjective	Used to describe something that is one of a kind or unlike anything else.
a	Article	Required before unique since the initial sound is consonantal.

Correct Example Sentences

It is a unique opportunity that few people will ever encounter again.
This museum holds a unique collection of ancient artifacts from the region.
She created a unique design that perfectly matched her interior goals.
The scientist discovered a unique method for solving complex equations.
They offer a unique service that helps businesses grow faster.
He owns a unique car that no one else in the city possesses.
This recipe provides a unique flavor that blends spices together well.
The artist painted a unique landscape that captured the morning light.
Please consider a unique solution that addresses all of our concerns.
The event was a unique celebration of local culture and history.

Common Mistakes and Fixes

This is an unique gift that you will treasure forever.: This is a unique gift that you will treasure forever.
He made an unique contribution to the project team.: He made a unique contribution to the project team.
They sold an unique item at the market yesterday.: They sold a unique item at the market yesterday.
I found an unique path through the dense forest.: I found a unique path through the dense forest.
She gave an unique speech to the students.: She gave a unique speech to the students.
That is an unique idea for the new business.: That is a unique idea for the new business.

A Quick Test You Can Use

To determine the correct article, focus entirely on the sound the word makes at the very beginning of the sentence rather than looking at the letters. If the word starts with a sound that you would use to start a whisper, it requires the article a, while words starting with sounds that require a breath to begin require an.

Related Word Pairs

a huge or an huge: Use a huge because the word starts with a consonant sound.
a one or an one: Use a one because the word starts with a consonant sound.
a historic or an historic: Use a historic because the word starts with a consonant sound.
a European or an European: Use a European because the word starts with a consonant sound.
a uniform or an uniform: Use a uniform because the word starts with a consonant sound.

Frequently Asked Questions

Why do people write an unique so often?

People often write an unique because they associate the letter u with vowel sounds. However, the actual pronunciation of unique begins with a consonant sound, which requires the use of the article a instead of an for grammatical correctness.

Can unique ever take the article an?

No, unique can never take the article an because it does not begin with a vowel sound. Even though the letter is u, the sound produced at the start of the word is consonantal, so the article a is always the correct choice to use.

What is the difference between a unique and an unique?

The difference is that a unique is the correct grammatical form while an unique is incorrect. The error stems from misidentifying the initial sound of the word as a vowel, when it is actually a consonant sound that dictates the use of the article a.

Does unique mean the same thing if preceded by a different article?

The meaning of the word unique remains the same regardless of the article used, but using an unique is grammatically wrong. The word always describes something that is one of a kind, but only the article a makes the phrase acceptable in standard written English.