(noun, verb, interjection)


1. used to suggest the sound of an explosion.


1. a deep prolonged loud noise

Similar word(s): roar, roaring, thunder

Definition categories: event, noise

2. a state of economic prosperity

Definition categories: state, prosperity

3. a sudden happening that brings good fortune (as a sudden opportunity to make money)

- the demand for testing has created a boom for those unregulated laboratories where boxes of specimen jars are processed like an assembly line

Similar word(s): bonanza, godsend, gravy, windfall

Definition categories: event, happening, occurrence, occurrent

4. a pole carrying an overhead microphone projected over a film or tv set

Definition categories: man–made, pole

5. any of various more-or-less horizontal spars or poles used to extend the foot of a sail or for handling cargo or in mooring

Definition categories: man–made, spar

Sentences with boom as a noun:

- The boom of the surf.


1. make a resonant sound, like artillery

- His deep voice boomed through the hall

Similar word(s): din

Definition categories: perception, go, sound

2. hit hard

Similar word(s): blast, nail, smash

Definition categories: contact, hit

3. be the case that thunder is being heard

Similar word(s): thunder

Definition categories: weather

4. make a deep hollow sound

- Her voice booms out the words of the song

Definition categories: perception, go, sound

5. grow vigorously

- business is booming

Similar word(s): expand, flourish, thrive

Definition categories: change, grow

Sentences with boom as a verb:

- Thunder boomed in the distance and lightning flashes lit up the horizon.

- The cannon boomed, recoiled, and spewed a heavy smoke cloud.

- Beneath the cliff, the sea was booming on the rocks.

- I can hear the organ slowly booming from the chapel.

- Men in grey robes slowly booming the drums of death.

- If you pull this off every paper in England and America will be booming you.

- to boom out a sail; to boom off a boat

- Business was booming.

- to boom railroad or mining shares