operative

C2+ Topic:Cause, Change & Process

US /ˈɑpərətɪv/ UK /ˈɒpərətɪv/ See IPA manual

adj noun

Meanings

1

adj
functioning or having effect; in operation

The new regulation becomes operative at midnight.

Thesaurus

Synonyms

1 adj · functioning or having... functioning effective active working operationalin forcevalid

Opposites

inoperative ineffective invalid defunct dormant

Word family

Derived forms operativelyoperativeness

Related forms operate operation operant cooperative

Etymology

From Late Latin 'operativus' ('creative, formative'), from Latin 'operari' ('to work'), from 'opus' ('work').

operativus Latin operari Latin

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Topics

Cause, Change & Process Word Formation & Derivatives

# operative

**Type:** Word
**Level:** C2+
**Part of speech:** adj, noun
**IPA (US):** ˈɑpərətɪv
**IPA (UK):** ˈɒpərətɪv

## Meanings
1. functioning or having effect; in operation

## Examples
- The new regulation becomes operative at midnight.

## Synonyms
- functioning
- effective
- active
- working
- operational
- in force
- valid

## Antonyms
- inoperative
- ineffective
- invalid
- defunct
- dormant

## Derived Forms
- operatively
- operativeness

## Related Forms
- operate
- operation
- operant
- cooperative

## Roots and Affixes
- Root: operativus
- Root: operari

## Etymology
From Late Latin 'operativus' ('creative, formative'), from Latin 'operari' ('to work'), from 'opus' ('work').

## AI Etymology
Operative is from Late Latin 'operativus' ('creative, formative'), from Latin 'operari' ('to work'), from 'opus' ('work'). Important recorded forms include operativus (Latin) and operari (Latin). The current sense covers functioning or having effect; in operation. The wider family includes derived forms such as operatively and operativeness and related words such as operate, operation, operant, and cooperative.

## Topics
- Cause, Change & Process
- Word Formation & Derivatives

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operative

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