proposer
noun [ C ]
uk/prəˈpəʊzər/ us MEETINGS
someone who makes a formal suggestion:
The proposer of the motion this morning is Jonathan Holwe.
MEETINGS
a person who suggests someone's name for a position or as a member of an organization:
The candidate can be proposed by one proposer and two seconders.
INSURANCE
someone who has applied for insurance for themselves or their property:
The proposer must not hide any fact relating to the risk.