blind alley

noun

a road, alley, etc., that is open at only one end.

a position or situation offering no hope of progress or improvement: That line of reasoning will only lead you up another blind alley.

Origin:
1575–85

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins

World English Dictionary

blind alley

—n
1.	an alley open at one end only; cul-de-sac
2.	informal a situation in which no further progress can be made

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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00:10

Blind alley is always a great word to know.

So is lollapalooza. Does it mean:

an extraordinary or unusual thing, person, or event; an exceptional example or instance.

a chattering or flighty, light-headed person.

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American Heritage

Idioms & Phrases

blind alley

A dead end; a position without hope of progress or success. For example, That line of questioning led the attorney up yet another blind alley. This term alludes to a street or alley that has no outlet at one end. [Mid-1800s]

Example sentences

Whether scientists have faith or not is a bit of a blind alley.

Three decades of wishful thinking and building space ambitions on an inadequate funding basis has led us into a blind alley.

Too often that mistake has led us up the blind alley of advocacy.

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Matching Quote

"Nearly a million species of animals are already known. Of these, only a few thousand are endowed with anything which can be called intelligence, only a few tens with high intelligence, and only one with conceptual thought. In the same way, there are hundreds of known religions; it had better be left to more orthodox writers than myself to enumerate those which can be called high religions. Animal evolution witnesses to a central upward trend of biological progress; it also shows us the retention of low types along with high, the throwing out of blind-alley side branches of specialisation at every level, and sometimes even degeneration. Religious evolution also shows a central progress—but equally the production of bizarre side-branches, the permanent confining of the religious spirit in low-level embodiments, its projection into every conceivable cul-de-sac, its too frequent bending over from upward to downward growth."

-Julian Huxley