# fudge factor

idiom

Source: https://englishreference.com/idiom/fudge-factor
Updated: 2026-08-10

## Meaning

A quantity introduced to compensate for uncertainty.

## Examples

- We added a fudge factor to cover unexpected costs.
- The builder included a fudge factor in his estimate because he wasn't sure how long the repairs would take.
- Recognizing the volatility of raw material prices, the economist inserted a modest fudge factor into his forecast to account for market fluctuations no model could predict.

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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.