GRADUATE - [noun] a person who has completed a university, college, school etc.
Examples of use
It's a great prestige to be a graduate of Harvard Law School.
When the unemployment rises, even the university graduates have difficulties to find a well-paid job.
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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.
You can always find a partner, who would also like to improve his/her