to and fro
Proposed by a contributor, not yet supported by evidence.
Where it’s used:
Used
Widespread English
Examples
We were running to and fro.Chúng tôi đã chạy đi chạy lại.
Tatoeba sentence #23290 (CC BY 2.0 FR, tatoeba.org, retrieved 2026-07-31)
Sources & notes
Listed on Wikipedia “Irreversible binomial” (CC BY-SA 4.0, retrieved 2026-07-29). Definition drafted by AI (@cf/meta/llama-3.3-70b-instruct-fp8-fast) and auto-approved by rule on 2026-07-30; pending editor spot-check.
Common questions
What does “to and fro” mean?
moving back and forth Literally: swinging from one side to the other
Is “to and fro” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.