At length

Full definition of at length

Prepositional phrase

1. For a long time.He went on at length about his supposed qualifications.
2. (formal or dated) At last, finally.She led us through the tunnels for some time, until at length we reached a small door in the rock.
• 1898, J. Meade Falkner, Moonfleet Chapter 4How long I slept I cannot tell, for I had nothing to guide me to the time, but woke at length, and found myself still in darkness.
3. (archaic) In full; without omission or abbreviation.