# weak sister

idiom

Source: https://englishreference.com/idiom/weak-sister
Updated: 2026-08-10

## Meaning

A person who is cowardly or indecisive.

## Examples

- He is a weak sister when it comes to making tough choices.
- The team lost the game because their captain acted like a weak sister during the final minutes.
- Despite his loud promises of loyalty, he proved to be a weak sister when the crisis demanded true courage.

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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.