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 formssu·i·cid·al·ly, adverbpseu·do·su·i·ci·dal, adjectiveun·su·i·cid·al, adjectiveun·su·i·cid·al·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for suicidal

fatal, depressed, deadly, dangerous, lethal, destructive

Examples from the Web for suicidal

Contemporary Examples of suicidal

Historical Examples of suicidal

  • 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.

  • 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.

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

British Dictionary definitions for suicidal



involving, indicating, or tending towards suicide
liable to result in suicidea suicidal attempt
liable to destroy one's own interests or prospects; dangerously rash
Derived Formssuicidally, 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

Word Origin and History for suicidal

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

Online Etymology Dictionary, © 2010 Douglas Harper

suicidal in Medicine




Of or relating to suicide.
Likely to attempt suicide.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.