English Reference

Word

uneven

Phoneticsun·even

US/əˈnivən/

UK/ʌnˈiːvən/

Definitions

01bumpy or rough

B1 · Intermediate

adj. not flat or smooth; having a surface that goes up and down.

adj. describing a surface that is not level, smooth, or flat; characterized by irregularities such as bumps or pits.

“The old road was so uneven that it was difficult to ride a bike on it.”

“The contractor struggled to lay the tiles correctly because the underlying concrete floor was significantly uneven.”

Antonyms

02not equal or uniform

B2 · Upper Intermediate

adj. not balanced or equal in size, amount, or strength.

adj. lacking symmetry, balance, or uniformity in distribution or proportion.

“The two teams were uneven, with one side having much better players.”

“The wealth distribution in the region remains uneven, with the majority of resources concentrated in the urban centers.”

03varying in quality

B2 · Upper Intermediate

adj. changing from good to bad; not consistent.

adj. characterized by inconsistent quality or performance; varying between high and low standards.

“The actor gave an uneven performance, being great in some scenes but boring in others.”

“Critics noted that while the novel had brilliant moments of prose, the pacing was uneven and the ending felt rushed.”

Antonyms

04odd numbers

C2 · Proficiency Mathematics Archaic

adj. describing a number that cannot be divided exactly by two.

adj. pertaining to odd numbers; not divisible by two. This usage is largely restricted to historical or specific mathematical contexts.

“In some old books, they use the word uneven to mean numbers like three or five.”

“The treatise discusses the properties of uneven numbers, a term the author uses interchangeably with what we now call odd integers.”

Synonyms

odd

Antonyms

05to make rough

C1 · Advanced Formal

v. to make a surface rough or not flat.

v. to cause a surface or distribution to become irregular or non-uniform. This transitive use is relatively rare in modern English.

“The heavy rain started to uneven the dirt path through the garden.”

“The constant shifting of the tectonic plates began to uneven the seabed over several millennia.”

Synonyms

roughen

Antonyms

Etymology

From Middle English uneven, from Old English unefen (“unequal, unlike, dissimilar, diverse, irregular”), equivalent to un- + even. Cognate with Dutch oneven (“unequal, uneven, odd”), German uneben (“uneven, rough, irregular, bumpy”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

ADJECTIVE

uneven(A2)

Domain

Mathematics

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.A2 KeyIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.3.0–4.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 2.0–2.524–43TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.225–549
Frequency
Frequent
Level
A2 · Elementary
Updated

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