# someday

/ˈsəmˌdeɪ/ (US) · /sˈʌmdeɪ/ (UK) · CEFR B1 · Adverb

Source: https://englishreference.com/word/someday
Updated: 2026-05-02

## Definition

at an unknown time in the future. You use this when you talk about a plan or a dream that does not have a set date yet.

For teachers: at some indefinite time in the future. Often used to express aspirations or hypothetical future events without a specific timeline.

## Examples

- I hope to visit Japan someday.
- She dreams of owning a small house by the sea someday when she retires from her job.
- While the current technology is limited, scientists believe that someday we will be able to generate clean energy from these deep-sea thermal vents.

## Pitfalls

- Not "I will see you some day." but "I will see you someday." — As an adverb meaning 'at an indefinite time', it is written as one word; 'some day' as two words usually refers to a specific but unnamed single day.

## Usage notes

- Typically placed at the beginning or end of a clause to set the temporal context.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.