Guest

unfitness

/ʌnˈfɪtnəs/ · un·fit·ness
noun
  1. The condition of being unfit; lack of physical or mental suitability. His unfitness for the marathon became evident after he collapsed at the halfway point.
  2. Unsuitability for a particular role, task, or legal status. The court ruled on his unfitness to stand trial due to severe cognitive impairment.
Did you know? In legal jargon, "unfitness" is often used to describe a defendant's inability to understand proceedings, a concept that dates back to English common law.
Written by Lexi Wordsworth, Dictionary Editor 1 lookups Added Aug 5, 2026