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[soo-uh-sahyd-l] /ˌsu əˈsaɪd l/
pertaining to, involving, or suggesting suicide.
tending or leading to suicide.
foolishly or rashly dangerous:
He drives at a suicidal speed.
Origin of suicidal
First recorded in 1770-80; suicide + -al1
Related forms
suicidally, adverb
pseudosuicidal, adjective
unsuicidal, adjective
unsuicidally, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for suicidal
Contemporary Examples
Historical Examples
  • This was the feeling which forbad him to retreat from his suicidal purpose.

    Kept in the Dark

    Anthony Trollope
  • Do not rail against the designs of Providence; it would be suicidal.

    The Philippine Islands John Foreman
  • It would be suicidal for the two men now to attempt to do anything to free them.

    The Cave of Gold

    Everett McNeil
  • Exposure, wet feet, were as suicidal in her condition as poison, he had told her.

    The Man from the Bitter Roots

    Caroline Lockhart
  • I found Tony, the suicidal Greek, steering this morning when I came on deck.

British Dictionary definitions for suicidal


/ˌsuːɪˈsaɪdəl; ˌsjuː-/
involving, indicating, or tending towards suicide
liable to result in suicide: a suicidal attempt
liable to destroy one's own interests or prospects; dangerously rash
Derived Forms
suicidally, adverb
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 suicidal

1777, from suicide + -al (1). Related: Suicidally.

Online Etymology Dictionary, © 2010 Douglas Harper
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suicidal in Medicine

suicidal su·i·cid·al (sōō'ĭ-sīd'l)

  1. Of or relating to suicide.

  2. Likely to attempt suicide.

su'i·cid'al·ly adv.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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