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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

At the beginning of the season-opening Grand Slam, Djokovic insisted he did not feel this fortnight was "make or break" for his ambition of hitting the magic number of 25.

From BBC • Jan. 31, 2026

Read: Amazon’s stock comeback hinges on AWS hitting this magic number.

From MarketWatch • Oct. 20, 2025

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

From "Outliers" by Malcolm Gladwell