from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The quality of being masterly.
from the GNU version of the Collaborative International Dictionary of English
- n. The quality or state of being masterly; ability to control wisely or skillfully.
from The Century Dictionary and Cyclopedia
- n. The condition or quality of being masterly; masterly ability or skill.
masterly + -ness (Wiktionary)