agonist
/ˈæ.ɡɘ.nɪst/
Meaning 1
a proponent or supporter of a cause
“She became an agonist for environmental protection.”Add to my deck
Meaning 2
A substance that activates a receptor.
“The agonist triggered a strong response in the body.”Add to my deck
Meaning 3
muscle that causes movement in the body
“The agonist contracted to lift the heavy object.”Add to my deck