bitter end
That part of an anchor cable which is abaft the bitts and thus remains inboard when a ship is riding at anchor.
pay out a rope to the bitter end (pay out all of the rope)
VERBS
be, feel, seem
become, grow, turn
After their divorce, she became bitter and refused to speak to him for years.
remain
leave sb, make sb
Years of unfair treatment at work made him bitter and resentful toward his former colleagues.
ADV
extremely, very | quite, rather, slightly
PREP
about
He remained bitter about losing the job to someone less experienced than him.
towards
She has remained bitter towards her former business partner for many years now.
VERBS
be
become, turn
After the argument, their friendship became bitter and they stopped speaking to each other.
remain
ADV
extremely, really, very | quite, rather
VERBS
be, taste
The medicine was so bitter that my son refused to swallow it.
ADV
extremely, very | rather, slightly, somewhat