someday
Americanadverb
adverb
Spelling
The adverb someday is written solid: Perhaps someday we will know the truth. The two-word form some day means “a specific but unnamed day”: We will reschedule the meeting for some day when everyone can attend.
Etymology
Origin of someday
before 900; Middle English sum day, Old English sum dæg; see some, day
Explanation
The adverb someday means eventually or at some point in the future. So if you plan to visit Sri Lanka someday, you'd like to do it but you don't know exactly when it will happen. Use the word someday when you can't be specific about when something will occur. If you're not sure when you'll next see your friend who's moving to Alaska, you can say, "I'll visit you someday soon!" And if you keep planning to make homemade bread but never get around to it, you might promise yourself you'll do it someday.
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 will continue to work, he predicts, because someday Bitcoin will be $10 million apiece.
From Slate ● Sep. 20, 2026
If tech bros are saying that AI might someday break containment and take down civilization, that sounds like an accountability sink coupled with an investor pitch.
From Salon ● Sep. 16, 2026
Like many boys growing up in the U.S. in the 1950s and ’60s, I loved baseball and thought I could someday be good enough to play.
From The Wall Street Journal ● Sep. 13, 2026
Though she and her husband may buy someday, Slagle doesn’t lean into a common refrain of previous generations that “you can’t rent forever.”
From MarketWatch ● Sep. 2, 2026
“And perhaps, someday, there will be a way to return you to your native habitat. Although Africa is certainly a long distance away.”
From "The Unseen Guest" by Maryrose Wood
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.
