- Very well
- He knows full well that I don't like that club.
- You all full well remember that day so joyous, yet so sad. How pure was the air—how delightful the temperature—how refreshingly blowed ihe breeze—how blooming were the fields—how brightly the waters reflected the sunbeams!
- 1829. Charles Burroughs. Memoirs and select papers of Horace B. Morse. Miller and Brewster. pages 83-87
- Besides, there is always a tendency—indeed an interest—to take on what one knows full well.
- 2006. Nadia Yassine. Full Sails Ahead. Justice and Spirituality Publications. page 2.
Full was formerly used as an adverb in English. This has largely been replaced by fully, but "full well" remains in common usage, almost always modifying the verb "to know". It is sometimes corrected to "fully well", though this may seen as incorrect or a hypercorrection.
- Brians, Paul. Common Errors in English Usage. Williams, James Co. 2009.