;adv. In accordance with good usage :-- Sume synd tó þám bilewite menn þ̵ ðú ne miht áfindan of ánum þúsende ánne þe mæge þeáwfæstlíce sprǽce sprecan, Hml. S. 5, 222.
Cite the scanned version of the original dicionary like this:
Toller, T. Northcote, and Joseph Bosworth. "þeáwfæstlíce." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth : Supplement. Oxford: Clarendon Press, 1921. 728.