friend or foe
Proposed by a contributor, not yet supported by evidence.
Meaning · English
Someone who is either an ally or an enemy
Where it’s used:
Used
Widespread English
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 “friend or foe” mean?
Someone who is either an ally or an enemy
Is “friend or foe” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.