bitter end

bitter end idiom
The last extremity; also, death or ruin. For example, I'm supporting the union's demands to the bitter end, or Even though they fight a lot, I'm sure Mom and Dad will stay together to the bitter end. The source of this term may have been nautical, a bitter being a turn of a cable around posts, or bitts, on a ship's deck, and the bitter end meaning “the part of the cable that stays inboard.” Thus, when a rope is paid out to the bitter end, no more remains. [Mid-1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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