proposer
US /prəˈpoʊ.zɚ/
UK /prəˈpoʊ.zɚ/

1.
proponente, propositore
a person who puts forward a proposal or proposition.
:
•
The proposer of the new policy explained its benefits.
Il proponente della nuova politica ne ha spiegato i benefici.
•
Each proposer was given five minutes to present their idea.
Ogni proponente ha avuto cinque minuti per presentare la propria idea.