English Reference

Word

horizontal

Phoneticshor·i·zon·tal, stress on the third syllable

US/ˌhɔɹəˈzɑntəɫ/

UK/hˌɒɹɪzˈɒntəl/

Definitions

01flat or level

B1 · Intermediate

adj. flat and level; parallel to the ground rather than going up and down.

adj. parallel to the plane of the horizon; at right angles to the vertical.

“The carpenter used a tool to make sure the shelf was perfectly horizontal.”

“The architect emphasised the horizontal lines of the building to help it blend into the flat landscape of the surrounding plains.”

Synonyms

Antonyms

02successive notes

C2 · Proficiency Music Technical

adj. describing music where notes are played one after another in a melody.

adj. relating to the sequential progression of notes in a melody rather than the simultaneous notes of a chord.

“The teacher explained that a melody is a horizontal arrangement of notes.”

“The composer focused on the horizontal development of the fugue, ensuring each melodic line remained distinct within the polyphonic texture.”

Synonyms

Antonyms

03disease transmission

C1 · Advanced Medicine Technical

adj. the spread of a disease between individuals of the same generation.

adj. relating to the transmission of an infectious agent between members of the same generation, rather than from parent to offspring.

“The virus spread through horizontal transmission among the students in the dorm.”

“Public health officials monitored the horizontal transmission of the pathogen within the community to determine if social distancing measures were effective.”

Synonyms

Antonyms

04sexual

C1 · Advanced Humorous · Informal

adj. a polite or funny way to talk about sex.

adj. used as a euphemism for sexual activity, referring to the typical physical position during intercourse.

“They were enjoying some horizontal exercise on their afternoon off.”

“The tabloid used a variety of horizontal metaphors to describe the celebrity's latest romantic scandal without being explicitly graphic.”

Synonyms

05a flat part

B2 · Upper Intermediate Countable noun

n. a part of a structure or a line that is flat and level.

n. a horizontal line, plane, or structural component.

“The artist drew several strong horizontals to represent the sea.”

“The engineer checked the horizontals of the steel frame to ensure the weight was distributed evenly across the foundation.”

Synonyms

Antonyms

Collocations

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

Adjective

01. horizontal axis

“In this graph, the horizontal axis represents the months of the year.”

adj + noun

02. horizontal line

“Please draw a straight horizontal line across the middle of the page.”

adj + noun

Etymology

Borrowed from Middle French horizontal, from horizon, horizonte, from Latin horizōn (stem horizont-).

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

Word family

ADJECTIVE

horizontal(B1)

Idioms

Domains

BiologyGeologyMusic

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.B1 PreliminaryIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.4.0–5.0TOEFL 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: 3.0–3.544–71TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.550–784
Frequency
Frequent
Level
B1 · Intermediate
Updated

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English Reference