at last
Synonym discussion
Sense: idiom/1
These four expressions all indicate that something occurs after a passage of time, but they differ in emotional tone and narrative function. 'Finally' is the most neutral and versatile — it can describe a bus arriving on schedule ('The bus finally arrived at 9 a.m.') or the end of a long ordeal. 'At last' adds a strong layer of relief or satisfaction, making it ideal for moments of emotional release (e.g. after a rescue or reunion). 'At long last' intensifies this further with a more formal or dramatic tone. 'Eventually' foregrounds the time that passes rather than the feeling at the endpoint, so it works well when the timing is uncertain ('We eventually found the restaurant after getting lost twice'). 'In the end' is the broadest — it can refer to a conclusion that follows debate or logic rather than just time ('In the end, they decided to stay home'). Choose 'at last' when you want your reader to feel the relief of the wait; choose 'finally' when you simply want to mark that the wait is over.
Etymology
A fixed adverbial phrase combining the preposition 'at' and the noun 'last' (from Old English 'latost', meaning 'latest' or 'end'). The expression has been in use since the 13th century to mark the endpoint of a waiting period, with 'last' preserving an older sense of 'end' that no longer stands alone in modern English.
First known use
12th century
12th century, in the meaning defined above