Definitions

1. noun

The state of having or showing a high degree of skill or knowledge in a particular area or subject.

“Her expertness in playing the piano was evident at the concert last night.”

2. noun

The quality of being highly skilled or knowledgeable.

“The chef’s expertness in preparing fine cuisine impressed the food critics.”

3. noun

A high level of proficiency or skill in a particular area or subject.

“The company’s expertness in software development was a key factor in their success.”