suicide

UK: ˈsuːɪsaɪd | US: ˈsuːɪsaɪd

Definition
  1. n. the act of intentionally causing one's own death

  2. n. a person who commits such an act

  3. n. (figurative) an action that is destructive to one's own interests

Structure
sui <of oneself (Latin)>cide <killing (Latin)>
Etymology

The word "suicide" originates from Latin sui (genitive of se, meaning "of oneself") and -cidium (from caedere, "to kill"). It entered English in the mid-17th century, replacing earlier terms like "self-murder." The morphemes reflect the literal meaning of "killing oneself," with sui emphasizing the reflexive nature of the act.

Examples
  1. The novel explores the psychological turmoil leading to suicide.

  2. He was deeply affected by his friend's suicide.

  3. Critics called the policy change an economic suicide.

  4. Suicide rates have risen in recent years.

  5. The play portrays suicide as a tragic, irreversible decision.