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[seyn] /seɪn/
adjective, saner, sanest.
free from mental derangement; having a sound, healthy mind:
a sane person.
having or showing reason, sound judgment, or good sense:
sane advice.
sound; healthy.
Origin of sane
First recorded in 1620-30, sane is from the Latin word sānus healthy
Related forms
sanely, adverb
saneness, noun
nonsane, adjective
nonsanely, adverb
nonsaneness, noun
Can be confused
sane, Seine.
2. reasonable, sensible, judicious, level-headed. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for sanest
Contemporary Examples
Historical Examples
  • His daughter, who seemed to be the sanest one in the lot, run and shut the door.

    The Depot Master Joseph C. Lincoln
  • He knew that he perhaps was the sanest of all men who walked the earth.

    The Street That Wasn't There Clifford Donald Simak
  • I am inclined to regard it as the sanest of all human moods.

    Suspended Judgments John Cowper Powys
  • He is the sanest of all the great writers; perhaps the only sane one.

    Visions and Revisions John Cowper Powys
  • She is one of the sanest persons I have ever known, it seems to me.

    Fernley House Laura E. Richards
  • I have always regarded you as one of the sanest and best-bred women I know.

    The Seven Darlings Gouverneur Morris
  • He had somehow begun to appear to me the sanest of advisers.

    John Marvel, Assistant Thomas Nelson Page
  • This was her sanest friendship; the correspondence proves it.

    Unicorns James Huneker
  • Armathwaite was at his wits end to decide on the sanest course.

British Dictionary definitions for sanest


sound in mind; free from mental disturbance
having or showing reason, good judgment, or sound sense
(obsolete) healthy
Derived Forms
sanely, adverb
saneness, noun
Word Origin
C17: from Latin sānus healthy
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for sanest



1721, back-formation from sanity or else from Latin sanus "sound, healthy," in figurative or transferred use, "of sound mind, rational, sane," also, of style, "correct;" of uncertain origin. Used earlier, of the body, with the sense of "healthy" (1620s). Related: Sanely.

Online Etymology Dictionary, © 2010 Douglas Harper
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sanest in Medicine

sane (sān)
Of sound mind; mentally healthy.

sane'ness n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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