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Word

boom

noun C1
UK /buːm/
US /bʉwm/

Meanings

noun

A sudden period of rapid growth, success, or increased activity.

boom: A sudden period of rapid growth, success, or increased activity.
noun

A deep, loud sound that echoes, often from an explosion, thunder, or a large object hitting something.

boom: A deep, loud sound that echoes, often from an explosion, thunder, or a large object hitting something.
verb

To grow or increase very quickly, or to make a deep, loud sound.

boom: To grow or increase very quickly, or to make a deep, loud sound.

Definition

A boom is a sudden period of rapid growth, success, or increased activity.

A boom is a time when something grows very quickly or becomes much more successful. It can describe a strong economy, a fast-rising industry, or a sudden increase in demand and activity. It can also mean a deep, loud sound. In some contexts, it refers to a long pole or arm used to support or move equipment.

Examples

  • During the tech boom, small startups scaled into global companies almost overnight.
  • I woke up when a sudden boom echoed across the valley in the middle of the night.
  • The coastal town began to boom after the new rail link made commuting realistic.
  • She tried to stay cautious, even as the housing boom pushed prices beyond what most locals could afford.

Common mistake

Learners sometimes confuse boom (sudden growth) with bloom (flowers opening) because they sound similar but have different meanings and spelling.