observed

IPA/əbˈzɜːvd/
KK[əbzˈɚvd]IPA/əbˈzɝːvd/

observed — adjective

  • observedpositive
  • more observedcomparative
  • most observedsuperlative

1. Describes data, facts, or behaviour that scientists have seen and recorded durin

1.adjectiveB2
Definition

Describes data, facts, or behaviour that scientists have seen and recorded during a study or experiment, rather than assumed or predicted.

Example

The observed rise in ocean temperature matches the climate models.

observed + noun phrase (scientific data)

Scientists compared the observed results with their earlier predictions.

Common collocations
  • observed data
  • observed effect
  • observed behaviour
  • observed change
  • observed difference
Synonyms
  • recorded

    suggests the information was written down or stored; more neutral than 'observed'

  • documented

    implies formal, often written, evidence

  • measured

    emphasises quantitative data obtained through instruments

Antonyms

Usage Note

Frequently used in academic writing to distinguish empirical findings from theoretical predictions. Typically paired with nouns like 'data', 'effect', 'change', or 'difference'.

2. Describes a ritual, custom, practice, or standard that is traditionally maintain

2.adjectiveB2
Definition

Describes a ritual, custom, practice, or standard that is traditionally maintained and followed within a particular community or setting — for example, the customary silence in a library, or a convention that is established by tradition rather than written rules.

Example

Observed silence in the reading room is a rule everyone follows without being reminded.

observed silence (customary practice)

Annual harvest festivals are an observed tradition in many farming communities around the world.

observed tradition (established by convention)

Common collocations
  • observed silence
  • observed tradition
  • observed ritual
  • observed formality
  • observed practice
Synonyms
  • customary

    very close in meaning; more common in everyday language

  • traditional

    suggests long-standing practice passed through generations

  • established

    implies a practice is firmly in place, whether by tradition or formal rule

  • conventional

    suggests what is normally done according to social expectations

Antonyms

Usage Note

Unlike verb senses such as 'WATCH CAREFULLY' or 'NOTICE', this adjective sense does not describe an act of seeing. It modifies nouns directly and describes what is traditional or established by convention within a group.

observed — verb

Word family

Synonym discussion

Sense: adjective/1

All three words describe information that has been captured and preserved, but they differ in how the information was obtained. 'Recorded' is the most general — it simply means information was written down, stored, or captured on a device. 'Documented' adds the idea of formal written evidence, often with supporting details such as dates, signatures, or references. 'Measured' is more specific: it implies that the information was obtained through instruments or quantitative methods. For example, scientists observe a rise in temperature and then record it in a logbook; they document the procedure with photographs and notes; they measure the exact increase with a thermometer. 'Observed' itself adds the sense of direct sensory or instrumental perception rather than second-hand reporting.

recorded ↗documented ↗measured ↗

Common collocations

Nouns

Adverbs

Phrases

  • as observed by
  • it was observed that
  • it has been observed that

Prepositions

Etymology

LatinFrenchEnglish

From Latin 'observare', a combination of 'ob-' (toward, over) and 'servare' (to watch, guard, keep). The original Latin sense was 'to watch over, guard, pay attention to'. It passed through Old French 'observer' before entering Middle English around the 1300s. The meaning 'to watch carefully' is closest to the original Latin root, while the senses 'to remark' and 'to comply with' developed later as specialised extensions.

First known use

14th century

14th century, in the meaning defined at transitive sense 1