Antonyms of noun inhibitor

1 sense of inhibitor

Sense 1
inhibitor -- (a substance that retards or stops an activity)
       Antonym 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)

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

1 sense of inhibitor

Sense 1
inhibitor -- (a substance that retards or stops an activity)
       => substance -- (a particular kind or species of matter with uniform properties; "shigella is one of the most toxic substances known to man")