**Competent** (adjective) — Having the mental capacity and legal ability to understand the nature of one's actions and make informed decisions regarding legal matters.
Being competent means you have the mental ability to understand what you're doing and make informed decisions. It's about whether you can comprehend the choices you're making and their consequences.
Competence is presumed for adults. Unless proven otherwise, the law assumes you're capable of making your own decisions. Challenges to competence require evidence that someone doesn't understand their actions or can't process information necessary for decision-making.
Competence isn't all-or-nothing. Someone might be competent to make simple decisions but not complex ones. They might have good days and bad days. Competence is evaluated for specific decisions at specific times, not as a permanent general state.
⏱ When you'll encounter this term
Competence matters when executing legal documents, making medical decisions, entering contracts, or managing property. If someone isn't competent when they sign a will, the will can be challenged. If they weren't competent when granting power of attorney, that document might be invalid.
Courts determine competence when considering guardianship or conservatorship. They look at whether someone can manage their affairs, understand their situation, and make appropriate decisions. Being declared incompetent results in appointment of someone else to make decisions on their behalf.
You'll encounter competence questions when elderly or ill people are making significant decisions. Lawyers often document observations about a client's competence when preparing documents that might later be challenged. Medical professionals might be asked to assess competence before someone signs important legal papers.
**Related terms:** [Capacity](/dictionary/capacity), [Mental Capacity](/dictionary/mental-capacity), [Incompetent](/dictionary/incompetent)
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"The lawyer confirmed Grandad was competent to sign his will—he understood what he owned, who his family members were, and what the will would do."