the bitter end

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the bitter end

1. The point of completion or conclusion, even though it may be difficult, unpleasant, or take a long time to reach. Possibly of nautical origin, referring to the "bitts" on a dock to which a ship's ropes are moored. I'm not really enjoying this book, but I always make a point of sticking with a novel till the bitter end.
2. The final or most critical extremity, such as death or total defeat. We might not have a chance of winning today, but we have to give it our all until the bitter end! My father stayed beside my dying mother's bed till the bitter end.
See also: bitter, end
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

bitter end

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]
See also: bitter, end
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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