last-ditch effort


A desperate final attempt, as in We're making a last-ditch effort to finish on time. This expression alludes to the military sense of last ditch, “the last line of defense.” Its figurative use dates from the early 1800s.

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The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.