senile Hear it!

senile definition

se·nile (sē′nīl′, sen′īl′)

adjective

    1. of, typical of, or resulting from old age: now chiefly medical
    2. showing the marked deterioration often accompanying old age, esp. mental impairment characterized by confusion, memory loss, etc.
  2. Geol. nearing the end of an erosion cycle

Etymology: L senilis < senex, old: see senate

Related Forms:

  • senilely se′·nile′ly adverb
  • senility se·nil′·ity (sə nil′ə tē) noun

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