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Definitions

boom

[boom] / bum /
NOUN
loud sound; crash
Synonyms
STRONGEST
explosion
STRONG
bang barrage blare blast burst cannonade clap crack drumfire reverberation roar rumble slam smash thunder wham
NOUN
prosperity
Synonyms
STRONGEST
advance boost development expansion gain growth improvement increase inflation jump rush spurt upsurge upturn
STRONG
push
WEAK
prosperousness upswing
Antonyms
STRONGEST
decline decrease diminishment failure lessening loss shrinkage stagnation
WEAK
collapse
VERB
crash; make loud sound
Synonyms
STRONGEST
explode resound reverberate roar thunder
STRONG
bang blast burst clap crack drum roll rumble slam smash sound wham
Antonyms
WEAK
be silent
VERB
prosper
Synonyms
STRONGEST
develop expand flourish grow intensify strengthen swell thrive
STRONG
appreciate bloom enhance flower gain increase spurt succeed
WEAK
rise in value
Antonyms
STRONGEST
compress contract decline decrease fail languish lessen lower shrink stunt weaken
STRONG
lose shrivel
WEAK
collapse falter

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The U.S. shale boom helped keep a lid on oil prices.

From The Wall Street Journal • Apr. 7, 2026

It has been a volatile period for chip stocks amid the fighting in Iran, which has led investors to rotate away from technology companies riding the artificial-intelligence boom and toward value plays.

From Barron's • Apr. 6, 2026

At first they made money from illegal logging and plantations, later benefitting from a speculative property boom in the cities fuelled by Chinese investors.

From BBC • Apr. 6, 2026

The capex boom propping up GDP growth just got a deflationary haircut from a research paper.

From MarketWatch • Apr. 6, 2026

Whenever a plane travels that fast, it creates a shock wave called a sonic boom that sounds like a loud clap of thunder.

From "Reaching for the Moon" by Katherine Johnson