disappear if something disappears, you cannot see it any longer, or it does not exist any longer:
The sun slowly disappeared over the horizon. Millions of people saw their savings disappear. 16% of the forest cover has disappeared during the last 100 years.vanish to completely disappear, especially suddenly:
The boat vanished without trace off the coast of Australia. All hopes of finding the boy alive have vanished. The fields have vanished beneath a new town of skyscrapers and motorways.go away to stop existing – used about something bad such as a pain or a problem:
I wish this headache would go away. I’m afraid the problem won’t just go away.fade away to gradually become less clear, strong, or bright, and finally disappear:
Her voice began to fade away. His anger slowly faded away. The last rays of the evening sun were fading away.melt away especially literary to disappear, especially gradually – used about feelings or groups of people:
The crowd began to melt away. His initial excitement had melted away.die out to stop existing after gradually becoming more and more rare – used about a type of animal or plant, a disease, or a custom:
Wolves had died out in much of Europe. Many of the old childhood diseases have almost died out.become extinct if a type of animal or plant becomes extinct, it stops existing:
Dinosaurs became extinct millions of years ago. If nothing is done to save the whales, they will soon become extinct. [TahlilGaran] English Thesaurus ▲