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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.

"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

Tyrrell Hatton's tie with Collin Morikawa eventually meant Europe withstood a stunning US fightback to reach the magic number of 14 and a half points.

From BBC • Dec. 23, 2025

The magic number: For Bierbaum, $20 is the magic number, a price where customers don’t think twice when they buy.

From The Wall Street Journal • Dec. 6, 2025

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

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.