# therein lies the rub

> English word · Phrase

## Definitions
1. That is where the problem is found or located.

## Etymology
A misquotation or paraphrasing from Shakespeare's Hamlet: "ay, there's the rub".

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/therein-lies-the-rub