Competent

Possessing the necessary reasoning abilities or legal qualifications; qualified; capable; sufficient.

A court is competent if it has been given jurisdiction, by statute or constitution, to hear particular types of lawsuits.

A testator is competent to make a will if he or she understands what a will is and its effects, the nature and extent of the property involved, and the relationships with the people named in the will and those disinherited.