English Reference

Word

linear

Phoneticslin·ear

US/ˈɫɪniɝ/

UK/lˈɪniə/

Definitions

01straight

B2 · Upper Intermediate

adj. following a straight line or moving in one direction.

adj. having the form of a line; following a direct or straight course without deviation.

“The park has several linear paths that lead directly to the lake.”

“The urban planners proposed a linear park system that would follow the old railway tracks through the heart of the city.”

Synonyms

Antonyms

02sequential

B2 · Upper Intermediate

adj. happening in a clear, step-by-step order where one thing follows another.

adj. relating to a process that progresses in a logical, sequential manner from one stage to the next.

“The book tells a linear story, starting with the hero's birth and ending with his retirement.”

“Traditional novels often employ a linear narrative structure, whereas modern experimental fiction may jump between different time periods.”

Antonyms

03proportional

C1 · Advanced Mathematics Academic · Technical

adj. describing a relationship where two things change at the same steady rate.

adj. describing a relationship between two variables that can be represented by a straight line on a graph.

“There is a linear relationship between how much you work and how much you earn in this job.”

“The researcher noted a linear correlation between the increase in temperature and the rate of chemical decomposition in the sample.”

Synonyms

Antonyms

04long and narrow

C2 · Proficiency Botany Technical

adj. having a shape that is very long and thin with straight sides.

adj. possessing a long and narrow morphology with nearly parallel margins.

“The plant is easy to identify because of its long, linear leaves.”

“The species is characterized by its linear foliage, which allows it to minimize water loss in arid environments.”

Synonyms

Antonyms

05scheduled media

C1 · Advanced Technical

adj. describing television or radio that plays on a fixed schedule rather than on-demand.

adj. referring to traditional broadcasting where content is delivered according to a predetermined schedule.

“Many young people prefer streaming services over linear TV channels.”

“Advertisers are shifting their budgets away from linear broadcasting as more consumers migrate to asynchronous viewing platforms.”

Antonyms

on-demand

Collocations

Common phrases and expressions where native English speakers use the word “linear” in context.

Adjective

01. linear combination

“In advanced algebra, a vector can be expressed as a linear combination of other vectors.”

adj + noun

02. linear sequence

“The historian argued that events do not always follow a linear sequence of cause and effect.”

adj + noun

Real-World Examples

“While the links between physical activity and having great sex might seem obvious, they are not as linear as you might expect.”
The Guardian 16 Aug 2026
“For this is not a linear history; “the darkness had prompted a fossilisation of his [the poet’s] inner timepiece”.”
The Guardian 13 Aug 2026

Etymology

Borrowed from Latin līneāris, from līnea (“line”) + -āris (adjectival suffix), equivalent to line + -ar. Doublet of lineal.

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

Word family

ADJECTIVE

linear(C1)

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.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL 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: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
Frequency
Common
Level
C1 · AdvancedOxford
Updated

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English Reference