Words / B1

RAP-id/ˈræpɪd/

Rapid means happening very quickly. Rapid growth; a rapid increase. Fast and quick are everyday; rapid is more formal and common with change, growth, and progress. Rapidly is the adverb. Speedy is informal. Rapid does not usually describe a person running — use fast.

Meaning

Happening very quickly.

Examples

• “There has been rapid growth in online learning.”
• “The city has seen rapid development.”
• “His health improved rapidly.”

Good to know

rapid growth / change. Adverb: rapidly. People/vehicles: fast / quick.

Near in meaning

fast, quick

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