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Some common synonyms of fast are expeditious, fleet, hasty, quick, rapid, speedy, and swift. While all these words mean "moving, proceeding, or acting with celerity," fast and rapid are …

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How fast is your internet? It's important to understand that different internet speeds are necessary for different usage scenarios. Both download and upload speeds determine what's possible. …

How fast is your internet speed? Check your download, upload, and ping speed in under 30 seconds.