not to mention

Idioms

Also, not to speak of; to say nothing of. In addition to, besides what's already been said. For example, I don't think the voters will want that big program, not to mention the cost, or Dave teaches trumpet and trombone, not to speak of other brass instruments, or Their house is worth at least a million, to say nothing of their other assets.

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.

It’s the biggest global showcase for the world’s most popular sport, not to mention a television and marketing enterprise many times larger than the Super Bowl, the NBA Finals or the Oscars.

From Salon • Jun. 11, 2026

The explosion has reportedly set back Blue Origin’s progress by at least six months, not to mention derailed satellite-deployment timelines across the entire industry.

From MarketWatch • Jun. 10, 2026

"Transporting a stone of this size over such a long distance would have required planning, coordination and a deep understanding of the landscape -- not to mention tremendous determination," Dr. Clarke said.

From Science Daily • Jun. 9, 2026

A ticket is a rare opportunity to mingle in VIP areas over sushi rolls, not to mention fodder for Instagram posts or a chance to appear on television.

From The Wall Street Journal • Jun. 5, 2026

A strange sense of duty, not to mention a powerful curiosity, compelled him to join.

From "The Mysterious Benedict Society" by Trenton Lee Stewart

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023