Needle in a haystack

Meaning

Something extremely difficult to find.

Usage

Used when describing very low odds of discovery.

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.

Literal image of trying to find a needle hidden in hay.

Common proverb in both European and American traditions.