operative

noun adjective

Stress: first syllable

Syllables: op-er-a-tive (4)
English Definition

Functioning or having effect; a worker or secret agent

Example Sentence

The new regulations will become operative next month.

US IPA /ˈɑːpərətɪv/
UK IPA /ˈɒpərətɪv/

Synonyms

effective active functional agent

Antonyms

inoperative inactive ineffective