Noun
(nautical) the inboard end of a line or cable especially the end that is wound around a bitt
the final extremity (however unpleasant it may be)
Source: WordNethe was determined to fight to the bitter end Source: Internet
Coulter, The Confederate States of America pp. 322–324, 326. The Conscription Bureau was run by Brigadier General Gabriel J. Rains until May 1863, Brigadier General Charles W. Field until July 1864, Colonel John S. Preston until "the bitter end". Source: Internet
The Polish martial arts icon battled her way to the bitter end of a bruising Women’s Strawweight fight at UFC 248 back in March. Source: Internet
But it leads to a miserable life with no redeeming qualities to it in the final bitter end. Source: Internet
Technology has always been a double-edged sword; while it opens the door for advancement it also can be a siren song, luring the unsuspecting to a bitter end. Source: Internet
Turkey is threatening very aggressively that it will seek to implement what it perceives as its rights and those of the Turkish Cypriots to the bitter end. Source: Internet