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fast, rapid, swift, fleet, quick, speedy, hasty, expeditious mean moving, proceeding, or acting with celerity. fast and rapid are very close in meaning, but fast applies particularly to the thing that moves

Grammar Fast, quick or quickly? Fast and quick mean moving with great speed. Fast is both an adjective and an adverb. Quick is an adjective and the adverb form is quickly. …

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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. So when …

Learn how to conduct and interpret an internet speed test. Test your device speed and Wi-Fi gateway speed. Check availability for AT&T’s fastest internet plans with AT&T Fiber.

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Use our internet speed test tool to see how fast your internet speed really is. You’ll find out if your connection is fast enough for everyday activities like remote work or streaming movies — and you’ll …