operant

/AA1 P ER0 AH0 N T/
noun
  1. 1

    An operative person or thing.

  2. 2

    Any of a class of behaviors that produce consequences by operating (i.e., acting) upon the environment.

adjective
  1. 1

    That operates to produce an effect.

Synonyms

Antonyms

Source: https://en.wiktionary.org/wiki/operant