The straw that broke the camel's back

Meaning

The final burden that triggers failure.

Usage

Used when describing a tipping point.

Origin & History

Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.

From the older image of a final small burden breaking an animal's back; the camel version became standard in the 19th century.

Established in English by the mid-1800s.