Dictionary.com
Thesaurus.com

forlorn hope

American  

noun

  1. a perilous or desperate enterprise.

  2. a vain hope.

  3. Obsolete. a group of soldiers assigned to perform some unusually dangerous service.


forlorn hope British  

noun

  1. a hopeless or desperate enterprise

  2. a faint hope

  3. obsolete a group of soldiers assigned to an extremely dangerous duty

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of forlorn hope

1530–40; folk-etymological alteration of Dutch verloren hoop literally, lost troop

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“America is rich and fat and very, very noticeable in this world. It is a forlorn hope that we should be left alone.”

From The Wall Street Journal

The London Times notes, ‘The prospect of reaching the summit seems now much less a forlorn hope than it did.’

From Scientific American

Then, a forlorn hope: maybe the replacement battery shipped empty?

From The Verge

And I’m not the only one.,” but he was guilty of false equivalence and a forlorn hope.

From Washington Post

He added that public transport for many in north Wales was a "forlorn hope".

From BBC