Synonyms for In the end:

adv.

eventually (adverb)
finally, in the long run, ultimately, at last.
once and for all (adverb)
at long last.

adv

once and for all (adverb)
at long last.

n.

in the end (noun)
finally, ultimately, in the long run, at last, at long last.

Other synonyms:

adj.
at last.
adv
at last, in the long run, ultimately.