Definition of "doddering"

doddering

adjective
not comparable
1. mentally or physically infirm due to old age; senile
  Quotations
  You great fat, blasted, blear-eyed, blundering, thundering, brainless, God-forsaken, doddering, damned fool!
  1908, G[ilbert] K[eith] Chesterton, The Man Who Was Thursday: A Nightmare, Bristol: J[ames] W[illiams] Arrowsmith, […]; London: Simpkin, Marshall, Hamilton, Kent & Company, page 212
  Treat the doddering old fool with sympathy.
  1963, Thomas Pynchon, V., J. B. Lippincott & Co., page 241
  She treats him not as a doddering old fool but as a man hampered in his movements by injury.
  2005, J. M. Coetzee, “Four”, in Slow Man, New York: Viking, page 28
verb
1. present participle and gerund of dodder
noun
plural dodderings
1. A shaking or trembling movement, as of old age.
  Quotations
  Now that he was next in line to the minister of state security himself, an 82 year old man whose dodderings Fang graciously covered up to save everyone's face, Fang had a huge problem.
  2001, Seth Kohn, Escape on the Silk Road, page 7