English Reference

Word

labeled

Phoneticsla·beled, stress on the first syllable

/ˈɫeɪbəɫd/

UK spelling · labelled

Definitions

01to attach a tag

B1 · Intermediate American English

v. to put a piece of paper or a tag on something to show what it is or who it belongs to.

v. to attach a physical label or tag to an object for identification or classification.

“She labeled all the moving boxes so she would know which ones went in the kitchen.”

“The technician carefully labeled each specimen jar before placing them in the climate-controlled storage unit to prevent any cross-contamination of data.”

Synonyms

02to describe or categorize

B2 · Upper Intermediate American English

v. to describe someone or something using a specific word, often in a way that is unfair.

v. to assign a person or thing to a category, often in a restrictive or oversimplified manner.

“The media labeled him a hero after he helped his neighbors during the flood.”

“Critics labeled the new architectural style as derivative, failing to recognize the subtle innovations the designer had integrated into the facade.”

03having a tag

B1 · Intermediate American English

adj. having a physical tag or label attached.

adj. bearing a label or identifying mark; the past participle used as an attributive adjective.

“Please put the labeled folders on my desk and leave the blank ones in the drawer.”

“The warehouse was filled with clearly labeled crates, allowing the logistics team to fulfill orders with remarkable speed.”

Synonyms

Antonyms

unlabeled

04marked with an isotope

C1 · Advanced Science American English · Technical

adj. in science, replacing an atom in a molecule with a special version so it can be tracked.

adj. describing a compound in which one or more atoms have been replaced by a radioactive or stable isotope to track its progress through a system.

“The researchers used labeled molecules to see how the drug moved through the body.”

“By using carbon-14 labeled glucose, the biochemists were able to map the metabolic pathway with unprecedented precision.”

Usage

Often used in the context of 'isotopically labeled' or 'radioactively labeled'.

Synonyms

Collocations

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

Adverb

01. clearly labelled

“All the boxes in the storage room are clearly labelled so you can find things easily.”

adv + verb

Domain

Chemistry

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