SUICIDE - [noun] the act of killing yourself; destruction of one's own interests (financial suicide)
Examples of use
After her husband had died, she tried to commit suicide. Fortunately, her daughter found her in time to call the ambulance.
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English speaking practise
Remember that if you don't use that word in English conversations or writing you'll forget it in a short time. So the best thing you can do to learn this word is just trying to use it in speaking or writing. Remember also that practise is the key to fluent english speaking.
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