# founded on

CEFR B2 · Phrasal verb

Source: https://englishreference.com/word/founded-on
Updated: 2026-07-26

## Definition

to use a specific idea, fact, or belief as the main support for something else. You use this when one thing is the base that another thing is built upon.

For teachers: to base a principle, system, or argument on a specific underlying concept or set of facts. The verb is transitive and typically appears in the passive voice.

## Examples

- Their relationship is founded on trust.
- The new company was founded on the idea that high-quality software should be free for everyone.
- The nation's legal system is founded on the principle that every citizen is entitled to a fair and impartial trial regardless of their social standing.

## Pitfalls

- Not "The theory was found on solid evidence." but "The theory was founded on solid evidence." — learners often confuse the past participle of 'found' (to establish) with 'found' (the past tense of 'find').

## Usage notes

- most commonly used in the passive voice ('be founded on') to describe abstract concepts like theories, laws, or relationships.
- Teaching tip: contrast with 'based on'; while 'based on' is more common for general evidence, 'founded on' implies a stronger, more permanent structural or moral base.

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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.