someday

American  

[suhm-dey] / ˈsʌmˌdeɪ /

adverb

1. at an indefinite future time.

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someday British  

/ ˈsʌmˌdeɪ /

adverb

1. at some unspecified time in the (distant) future

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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

He tries to remind himself that the raids will someday end.

From Los Angeles Times • Jun. 7, 2026

Instead, Speech First brought only preemptive claims speculating that their members’ views might someday in the future be chilled.

From Slate • Jun. 2, 2026

“I could totally imagine that someday there’s actually an AI supercomputer in your house and it’s running all of your agents,” he added.

From MarketWatch • Jun. 1, 2026

"If we can do that, maybe someday we could do quantum computing in a cell phone," Pan says with a smile.

From Science Daily • May 30, 2026

So someday when Razi was an adult he could be back here and see the babies of one of these same turtles.

From "The Boy Who Met a Whale" by Nizrana Farook

Related Words

• finally
• one day
• sometime
• sooner or later
• subsequently
• ultimately