Ultimately means "at the very end of the process." Your strategy of robbing banks with a water gun worked a few times, but ultimately it was unsuccessful. Use ultimately when you want to stress that there are many different elements of something, but in the end there's one clear conclusion.
What ultimately means?
Ultimately means finally, after a long and often complicated series of events.
Does ultimately mean finally?
Ultimately is an adverb. We use it to mean 'finally, after a series of things have happened': …