At long last is an expression that is used to describe something that has been waited for a long time. It can be used to express relief or joy when something FINALLY happens after a long wait. The crossword solutions for this term are 'FINALLY' with 7 letters and 'EVENTUALLY' with 10 letters. Both words are used to describe something that happens after a period of waiting, but 'FINALLY' implies that the wait was shorter than 'EVENTUALLY'.