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senility

[si-nil-i-tee]
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noun
  1. the state of being senile, especially the weakness or mental infirmity of old age.
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Origin of senility

First recorded in 1770–80; senile + -ity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for senility

Contemporary Examples

Historical Examples

  • Not of age—merely of time; for here was no senility, no quavering or fretful lines.

    The Spenders

    Harry Leon Wilson

  • "Glad your senility has not affected that remnant of your common-sense," he declared.

    Kent Knowles: Quahaug

    Joseph C. Lincoln

  • Is it a sign of senility, or half-thought-out ideas, or what?

    Cyropaedia

    Xenophon

  • There's a similar touch of ineptitude (senility, perhaps) in the Memorabilia, ad fin.

    Cyropaedia

    Xenophon

  • And this is the man they accuse of senility and weak intellect!


Word Origin and History for senility

n.

1753, from senile + -ity.

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Online Etymology Dictionary, © 2010 Douglas Harper

senility in Medicine

senility

(sĭ-nĭlĭ-tē)
n.
  1. The state of being senile.
  2. The mental and physical deterioration characteristic of old age.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.