English Reference

Word

seeing

Phoneticssee·ing, stress on the first syllable

US/ˈsiɪŋ/

UK/sˈiːɪŋ/

Definitions

01because or since

B1 · Intermediate

conj. you use this to give a reason for something, especially when you have just noticed a fact.

conj. used as a subordinating conjunction to introduce a statement that explains or justifies a following action or decision.

“Seeing it's such a nice day, why don't we walk to the park?”

“Seeing that the primary witness has failed to appear, the judge has little choice but to grant a further adjournment.”

Usage

Often followed by 'that', though 'that' is frequently omitted in speech.

Pitfall

Seeing that it's raining, so we should stay.

Seeing that it's raining, we should stay.

Do not use 'so' after 'seeing that'; the first clause already establishes the reason.

02the act of looking

B2 · Upper Intermediate Uncountable noun

n. the act of looking at or noticing something with your eyes.

n. the process or instance of visual perception.

“For many people, seeing is believing.”

“The sudden seeing of the mountain peak through the clouds provided the hikers with a much-needed boost in morale.”

03astronomical clarity

C2 · Proficiency Uncountable noun Science Technical

n. how clear and steady an image looks through a telescope, depending on the air.

n. the quality of the observing conditions as affected by the turbulence of the Earth's atmosphere.

“The seeing was poor tonight because of the high winds and heat.”

“Astronomers prefer high-altitude observatories where the seeing is consistently stable, allowing for high-resolution imaging of distant galaxies.”

Usage

Usually uncountable in this technical context.

04having sight

B2 · Upper Intermediate

adj. having the ability to see; not blind.

adj. possessing the faculty of vision; often used in compound phrases.

“The charity provides seeing eye dogs for people who have lost their vision.”

“The exhibition was designed to be accessible to both seeing and non-seeing visitors through the use of tactile displays.”

Synonyms

Antonyms

Collocations

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

01. seeing people

Real-World Examples

“He's a Moroccan man in his twenties and wants to emigrate to Europe - not least because he's been seeing lots of videos on Instagram that make the trip look easy.”
BBC News 14 Aug 2026
“We weren’t just robbed of the opportunity of seeing our favourite bands in the flesh.”
The Guardian 14 Aug 2026
“The flight attendants reported “hearing and feeling a loud continuous vibration and seeing a small amount of fog/smoke before the oxygen masks dropped”, the report found.”
The Guardian 14 Aug 2026
“We’re seeing lots of people who feel very dizzy, some of whom have fallen over and hurt themselves as a consequence.”
The Guardian 14 Aug 2026

Etymology

From see + -ing.

Probably an elision of "seeing that" or "seeing as".

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

Word family

CONJUNCTION

seeing(C2)

Idioms

Domain

Astronomy

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.C2 ProficiencyIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.8.5–9.0TOEFL 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: 6.0114–120
Frequency
Very common
Level
C2 · Proficiency
Updated

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English Reference