18 Nouns That Start With "U"
18 curated nouns that start with "U".
Below are 18 nouns that start with "U" in our curated English dictionary. Each entry includes a learner-friendly definition, IPA pronunciation, CEFR difficulty level, and example sentences. Words are sorted by frequency — the most common first. Click any word to view its full dictionary entry with synonyms, collocations, and common mistakes.
Most Common Nouns That Start With "U" (Top 1k)
Less Common Nouns That Start With "U" (Top 5k+)
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Uncle /ˈʌŋkəl/noun A1
A male family member who is your parent's brother or your aunt's husband.
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Unit /ˈjuːnɪt/noun A1
One thing by itself that is part of something bigger.
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User /ˈjuːzər/noun A1
Someone who operates or works with a tool, device, or service.
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Umbrella /ʌmˈbrelə/noun A1
A handheld object you open to stay dry in the rain or shaded from sun.
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Underpinning /ˌʌndərˈpɪnɪŋ/noun C1
The basic foundation or support system that something depends on.
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Uniform /ˈjuːnɪfɔːrm/noun A2
A uniform is special clothing that soldiers, police officers, or students wear to show they belong to a group.
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Universe /ˈjuːnɪvɜːrs/noun A2
Everything that exists in space: stars, planets, galaxies, and all matter.
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Understanding /ˌʌndərˈstændɪŋ/noun B1
When you understand something, you have understanding of it. This is your knowledge about a topic or idea.
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Underwear /ˈʌndərwɛər/noun A2
Underwear is clothing you wear under your regular clothes next to your skin.
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Unemployment /ˌʌnɪmˈplɔɪmənt/noun B1
Unemployment is when people do not have jobs and are looking for work.
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University /ˌjuːnɪˈvɜːrsɪti/noun A1
A school where adults study advanced subjects after secondary education.
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Unveiling /ʌnˈveɪlɪŋ/noun C1
When something is shown to the public for the first time, often in a formal or ceremonial way. Like removing a cover from a statue or revealing a product.
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Upbringing /ˈʌp.brɪŋ.ɪŋ/noun B2
Your upbringing is how your parents raised you. It includes the values, habits, and experiences you had growing up.
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Uptime /ˈʌpˌtaɪm/noun C1
How long a system or service is working and available. The opposite of downtime. Used to measure reliability and service quality.
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Username /ˈjuːzərneɪm/noun A2
The name you create and use to log into websites, apps, or social media accounts. It is usually different from your real name and is used along with a password.
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Understatement /ˌʌndəˈsteɪtmənt/noun C2
Deliberate downplaying of significance
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Utilitarianism /ˌjuːtɪlɪˈtɛrɪənɪzəm/noun C2
An ethical theory that actions should be judged by whether they produce the most overall happiness for the most people.
How to Use Nouns That Start With "U"
Nouns that start with "U" can act as the subject, object, or complement of a sentence. Pay attention to whether each noun is countable or uncountable — countable nouns take "a/an" and have plural forms (cat → cats), while uncountable nouns (water, advice) do not. The CEFR badge on each card tells you when learners typically meet the word; A1-A2 nouns are essential for everyday conversations, B1-B2 are common in news and writing, and C1-C2 nouns appear in academic and specialised texts.
Longest Noun That Start With "U"
Deliberate downplaying of significance
Frequently Asked Questions About Nouns That Start With "U"
- How many nouns that start with "U"?
- Our curated dictionary lists 18 nouns that start with "U", each with a definition, IPA, CEFR level, and example sentences. The list grows as new entries are reviewed.
- What are the most common nouns that start with "U"?
- Some of the most frequent nouns that start with "U" include US. These appear in everyday English and are useful for both beginners (A1-A2) and intermediate learners.
- What is noun?
- A noun is a word for a person, place, thing, idea, or quality. Nouns are the building blocks of every sentence and act as subjects, objects, or complements.
- What is the longest noun that start with "U"?
- The longest noun that start with "U" in our dictionary is "UNDERSTATEMENT" (14 letters). Tap the word to see its full entry.