Someone or something that establishes, sets up, or forms something else; a person or force that brings something into being.
From Latin 'constitutor,' from 'constituere' (to set up, establish). The suffix '-er' indicates an agent noun—someone who does the action. This word is much rarer than 'constituent' in modern English.
The Founding Fathers of the United States could be called 'constituters' because they literally set up and established the U.S. Constitution—the word captures the power to create fundamental structures!
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