# proponent

/pɹəˈpoʊnənt/ (US) · /pɹəpˈəʊnənt/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/proponent
Updated: 2026-05-08

## Definition

a person who publicly supports an idea, plan, or way of doing something. You use this word when someone is trying to convince others that a specific choice is the right one.

For teachers: a person who advocates for or supports a particular theory, proposal, or course of action. Often contrasted with 'opponent' in formal debates or legal contexts.

## Examples

- She is a strong proponent of renewable energy.
- As a leading proponent of the new tax reform, the senator spent months explaining its benefits to the public.
- While some experts remain skeptical of the technology, its proponents argue that the long-term efficiency gains will far outweigh the initial investment costs required for implementation.

## Usage notes

- Commonly followed by the preposition 'of' to indicate the cause or idea being supported.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.