expression

needle in a haystack

something very hard to find

In more detail

(idiom) something that is almost impossible to find because there are so many other things in the way; a situation where you are looking for something very difficult to locate among many possibilities

Examples

Finding a cheap apartment in this city is like looking for a needle in a haystack.

How to use needle in a haystack

This is a fixed idiom used to describe an extremely difficult or seemingly impossible search task. It emphasizes not just difficulty but the practical impossibility of success given the scale of the problem. The phrase is typically used when expressing frustration about trying to locate something specific within an overwhelming volume of alternatives.

Common phrases

find a needle in a haystack
looking for a needle in a haystack
like a needle in a haystack
searching for a needle in a haystack
it's a needle in a haystack

Synonyms

hard to find · impossible to locate · like looking for a pin in a haystack · very difficult to find · a long shot

A common mistake

Learners sometimes use the phrase as a noun phrase directly (e.g., 'The document is a needle in a haystack') when it is more naturally used with 'like' (e.g., 'Finding that document is like looking for a needle in a haystack') or as a predicate construction.

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