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Washington legal term

Incompetency in Washington Criminal Law

Current through 2026 Washington legislative session

In Washington criminal law, “Incompetency” is a term defined by statute rather than by its everyday meaning. Its statutory definition — quoted verbatim below — controls how the term is applied throughout the Washington criminal code.

What does “Incompetency” mean in Washington criminal law?

"Incompetency" means a person lacks the capacity to understand the nature of the proceedings against him or her or to assist in his or her own defense as a result of mental disease or defect. (RCW 10.77.010)

Statutes defining or using this term

Related terms in the same statutes

This reference is informational and is not legal advice.