Definitions

1. verb

to be lacking in skill or proficiency, especially in a particular activity or subject.

“She found it hard to unskill her opponent in the chess tournament.”

2. noun

a lack of skill or proficiency, especially in a particular activity or subject.

“The unskill of the new employee was evident in her first week of training.”

3. adverb

lacking in skill or proficiency.

“The team played unskillfully and lost the game.”