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Definitions

magic number

NOUN
secret
Synonyms
STRONGEST
code confidential information key mystery
STRONG
cipher confidence enigma formula occult oracle password puzzle unknown
WEAK
classified information privileged information skeleton in cupboard
Antonyms
WEAK
known public knowledge revelation

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.

Our magic number is fluid and unique to each of us.

From The Wall Street Journal • Mar. 23, 2026

"But with so much at stake and shareholders to appease, it seems ultimately the magic number couldn't be found, at least not right now," she added.

From Barron's • Feb. 5, 2026

Fourteen is the magic number, held by “All About Eve,” “Titanic” and “La La Land.”

From Los Angeles Times • Jan. 19, 2026

You may start a trend among wealthy parents, making $76,000 the magic number.

From MarketWatch • Jan. 8, 2026

In fact, researchers have settled on what they believe is the magic number for true expertise: ten thousand hours.

From "Outliers" by Malcolm Gladwell