1. One who makes a proposal, or lays down a proposition.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• propent,
• promonent,
• proponant,
• promonant,
• proponants,
• promenent,
• promanent,
• proponet,
• propenents,
• propenent,
• porponent,
• pronoment,
• promoinent,
• proponeant,
• pleuonectes,
• propoment,
• propponent,
• propoent,
• proponnet,
• proponend

• propensity,
• propound,
• propene,
• propman,
• propane,
• prevent,
• preponderant,
• prepayment,
• propanone,
• propenoate,
• preponderate.

The adjective form of the word "proponent" is "proponents".

The plural of the "proponent" can be the "proponents".

The singular of the "proponent" can be the "proponent".