not to mention

Idioms  

1. 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.

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Example Sentences

Not to mention a symbolic victory for Tehran, which could wield the threat of blocking the strait in the future to gain concessions and rebuild power.

From The Wall Street Journal • Mar. 25, 2026

Not to mention Europe’s longstanding military dependence on Washington.

From Barron's • Mar. 7, 2026

“As a woman, this is really disgusting to see. Not to mention, it brings dishonor on the House of Representatives.”

From Salon • Feb. 25, 2026

"Not to mention the refunds we now need to give out due to the sudden postponement of our event which we had to notify people on the day about."

From BBC • Feb. 9, 2026

Not to mention that every time I imagined pulling the wagonload home, I imagined that hawk picking up the crate and carrying it off.

From "Unusual Chickens for the Exceptional Poultry Farmer" by Kelly Jones