At last vs Ultimately

When to use each in English, with meaning, register, and examples.

At last

Top 2,000 (common)

Ultimately

Top 2,000 (common)B2adverb
 At lastUltimately
Pronunciation🇬🇧 //ət lɑːst//🇺🇸 //ət læst//🇬🇧 /["/ˈʌltɪmətli/"]/🇺🇸 /["/ˈʌltɪmətli/"]/
MeaningFinally after a long time waiting.In the end; finally.
ExampleI finished my project, and at last, I can relax.A poor diet will **ultimately lead to** illness.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR level-B2
Part of speechadverb
Collocationsat last, a resolution, at last, the moment, at last, the truthultimately responsible, ultimately decide, ultimately lead to
Antonyms-initially, first, at the beginning
Common mistakesConfusing with 'at least'; they have different meanings., Using in very formal writing where simpler alternatives may fit better.'Ultimately' is often misused when the context is not about finality., Learners may confuse 'ultimately' with 'eventually' but they are not exactly the same., Overusing 'ultimately' in casual speech can sound pretentious.
Usage notesUse 'at last' to express relief or joy when something finally happens. It's neutral and works in both spoken and written contexts.Use 'ultimately' to emphasize the final outcome of a situation. It is not suitable for casual or informal conversations.

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At last

Frequently asked questions: At last vs Ultimately

What's the difference between At last and Ultimately?

At last: Finally after a long time waiting. Ultimately: In the end; finally.

Can you show an example of each?

At last: I finished my project, and at last, I can relax. Ultimately: A poor diet will **ultimately lead to** illness.

Can I use At last and Ultimately interchangeably?

Not always. At last and Ultimately are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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