Englishfor English speakers
chronic
Adjective
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If something is chronic, it happens all the time.
Michelle is a chronic worrier who gets upset about everything.
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If something is chronic, it has happened for a long time.
My father has chronic back pain since he was injured at work 5 years ago.
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If something is chronic, it is difficult to stop.
My brother is a chronic smoker and is unable to quit.
brain
Noun
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Your brain is the part of your body that is inside your head.
The brain is the part of the body that thinks and controls the rest of the body through the nervous system.
He has serious brain damage from falling off of his bicycle and hitting his head.
syndrome
Noun
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A syndrome is multiple symptoms combined together characterizing a disease or mental problem.