one day
Proposed by a contributor, not yet supported by evidence.
Meaning · English
Literally: a single day
Register: neutral
Examples
I'll learn to play the guitar one day
AI-drafted example auto-approved by rule (illustrative, not a corpus attestation)
Sources & notes
Everyday learner phrase (CEFR A1); level cross-referenced from published learner lists. Definition pending editorial review. Definition drafted by AI (@cf/meta/llama-3.3-70b-instruct-fp8-fast) and auto-approved by rule on 2026-08-01; pending editor spot-check.
Common questions
What does “one day” mean?
at some point in the future Literally: a single day
Is “one day” formal or informal?
one day is generally neutral.