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
What I really don’t want is to leave our two kids with a huge financial burden someday if one or both of us need years of expensive care.
From MarketWatch ● Sep. 18, 2026
Try that someday on the 405 and let me know how it goes.
From The Wall Street Journal ● Sep. 15, 2026
If humanity someday sends a probe to another star, engineers will need a detailed understanding of every force that could affect its journey.
From Science Daily ● Sep. 2, 2026
It was every man for himself, just like it would be in a real simulation someday.
From "Glitch" by Laura Martin
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.
