Logo
PricingFor educatorsFSCE Hub
Log inTry for free
Learning

See how Prep4All works

A 5-minute film for parents

The Prep4All library

Every resource, with short videos

Lessons

Structured lessons & exercises — free samples

Fun Lessons

Interactive & engaging lessons

Vocabulary

Build your word power

Creative Writing

Prompts, techniques & games

Comprehension

Passages, skills & mock papers

Flash Cards

Quick revision cards

Knowledge Nuggets

Bite-sized learning tips

11+ Syllabus Hub

Every topic & question type explained

11+ Subjects

Explore all subjects

Exams & Tests

Mock Exams

Full exam simulations

Practice Tests

Try sample questions

Homework Zone

Weekly plans, groups & auto-planner

11+ Arcade

Themed 11+ games

Resources

Grammar Schools

School guides & information

Find Schools Near You

Nearest grammar schools by postcode

11+ Key Dates

Registration, test & apply-by dates

11+ Pass Marks

Qualifying scores by county

Readiness Quiz

Is your child ready? 2-min check

11+ Prep Guide

Complete preparation guide

FSCE Hub

Complete FSCE syllabus, schools & practice

FSCE Exam Guide

Exam preparation guide

ISEB Pre-Test Hub

Format, scoring, sections & preparation

ISEB Exam Guide

The Pre-Test explained for parents

ISEB Schools

Which schools use the Pre-Test — verified

Blog

Articles & expert tips

Contact Us

Get in touch with us

Join WhatsApp

Join our community group

11 Plus Vocabulary Words Starting With U

8 words with meanings, synonyms, antonyms & example sentences

These are the 8 vocabulary words starting with U from our free 565-word 11 plus vocabulary list, from unfathomable to until including 2 advanced words of the kind that separates top verbal reasoning scores. Each entry shows the meaning, synonyms, antonyms and an example sentence — the exact skills tested in GL and CEM verbal reasoning, comprehension and cloze questions. You can also download the full list as a free PDF or practise these words with our free vocabulary games.

unfathomable

/ʌnˈfæðəməbəl/adjective
Advanced

Impossible to understand or measure the depth of

“The universe is unfathomable in its vastness.”

Synonyms: incomprehensible, inexplicable, mysterious, profound

Antonyms: understandable, comprehensible, shallow

uniform

/ˈjuːnɪfɔːm/noun
Easy

A distinctive set of clothes worn by members of the same group

“Students must wear their school uniform every day.”

Synonyms: outfit, costume, attire, dress

union

/ˈjuːniən/noun
Intermediate

The act of joining together; an organization of workers

“The union of the two companies created a powerful corporation.”

Synonyms: alliance, merger, combination, federation

Antonyms: separation, division, split

unite

/juːˈnaɪt/verb
Easy

To come or bring together to form a single unit

“The team needed to unite to overcome the challenge.”

Synonyms: join, combine, merge, connect

Antonyms: divide, separate, split

unnecessary

/ʌnˈnesəsəri/adjective
Easy

Not needed or required; more than what is essential

“The extra packaging was completely unnecessary.”

Synonyms: unneeded, superfluous, excessive, redundant

Antonyms: necessary, essential, required

unorthodox

/ʌnˈɔːθədɒks/adjective
Advanced

Contrary to what is usual, traditional, or accepted

“His unorthodox teaching methods proved surprisingly effective.”

Synonyms: unconventional, unusual, irregular, nonconformist

Antonyms: orthodox, conventional, traditional

unsurpassed

/ʌnsəˈpɑːst/adjective
Intermediate

Better or greater than any other; unequalled

“Her knowledge of history remained unsurpassed by her peers.”

Synonyms: unequalled, unmatched, supreme, incomparable

Antonyms: surpassed, exceeded, inferior

until

/ənˈtɪl/preposition
Easy

Up to the point in time or event mentioned

“I will wait here until you return.”

Synonyms: till, up to, before, pending

Antonyms: after, since, from

← Words starting with TWords starting with V →

Turn these 8 words into marks

The interactive word list adds British audio pronunciation, memory tips and progress tracking for every word — and our 6 free vocabulary games turn revision into play.

Open the Interactive Word ListPlay Vocabulary Games

More 11+ vocabulary resources

Prep4All

Making 11+ & KS2 exam preparation engaging and effective for every child.

Contact: contact@prep4all.co.uk

Help: help@prep4all.co.uk

Platform
FeaturesPricingFor EducatorsLessonsFun LessonsPractice Tests11+ ArcadeKnowledge Nuggets

© 2026 prep4all.co.uk. All rights reserved.

Built with ❤️ in the UK