big one
Americannoun
Etymology
Origin of big one
First recorded in 1955–60
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.
Climate change is the big one, but it could also help with things like large-scale desalination, which has long been technically viable but has high energy demands.
From The Wall Street Journal • Apr. 6, 2026
The catch, and it’s a big one, is that the show is entirely written by artificial intelligence.
From Salon • Mar. 26, 2026
But the number six is set to be the big one to watch.
From BBC • Mar. 19, 2026
Presidio differs from most small-cap energy companies, which tend to have a wildcatter mentality—drill somewhere new and try to hit the big one.
From Barron's • Mar. 5, 2026
The big one answers, “We love you too.”
From "Ask the Passengers" by A.S. King
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
