Synonyms of horizontal

horizontal

adjective

as in flat

parallel to the ground

She reclined the chair to a horizontal position.

The line on the graph was nearly horizontal, indicating little growth over the fiscal year.

Related Words

• flat
• smooth
• prone
• recumbent
• reclining
• level
• supine
• flush
• prostrate
• plane
• reposing
• even

Dissimilar Words

• vertical
• erect
• standing
• upright
• raised
• upstanding

Example Sentences

Recent Examples of horizontal

Warmer sea surface temperatures fueled by El Niño and a lack of wind shear — horizontal differences in wind through the atmosphere — will allow Lala to steadily ramp up its maximum wind speeds day by day. — Sean MacAday, Sacbee.com, 13 Aug. 2026

The Fourier transform of a vertical line returns a horizontal line, and vice versa. — Shalma Wegsman, Quanta Magazine, 12 Aug. 2026

Both models forgo the four horizontal propellers utilized by quadcopters, replacing them with just two larger props. — New Atlas, 10 Aug. 2026

Four horizontal propellers provide vertical lift, while a separate propeller at the rear drives the aircraft during forward flight. — Atharva Gosavi, Interesting Engineering, 9 Aug. 2026