# 110 proof

idiom

Source: https://englishreference.com/idiom/110-proof
Updated: 2026-08-10

## Meaning

Stronger than strong.

## Examples

- That coffee is 110 proof.
- The new manager is 110 proof when it comes to enforcing the company rules.
- His commitment to the cause was 110 proof, leaving no room for doubt or hesitation among his followers.

## Origin

The term refers to the standard measure of alcohol content, where most retail spirits in the United States are sold at 80 to 95 proof. Alcohol recorded at a higher proof is historically associated with bootlegging.

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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.