ultimately vs at last

ultimately and at last both are adverbs.

Word	Noun	Adjective	Verb	Adverb
ultimately	No	No	No	Yes
at last	No	No	No	Yes

As adverbs, ultimately and at last are synonyms defined as:

Other synonyms of ultimately include at long last, finally, in the end.

ultimately (adverb)	at last (adverb)
as the end result of a succession or process	as the end result of a succession or process