Antonyms of noun activator

1 sense of activator

Sense 1
activator -- ((biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription)
       Antonym of inhibitor (Sense 1)
      => inhibitor -- (a substance that retards or stops an activity)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun activator

1 sense of activator

Sense 1
activator -- ((biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription)
       => substance -- (the real physical matter of which a person or thing consists; "DNA is the substance of our genes")