cheat on
Proposed by a contributor, not yet supported by evidence.
Meaning · English
To be unfaithful to someone in a relationship
Literally: deceive while being on something
Where it’s used:
Used
Widespread English
Examples
Don't you ever cheat on me, you foxy!Đừng hòng lừa đảo, đồ cáo già!
Tatoeba sentence #1542530 (CC BY 2.0 FR, tatoeba.org, retrieved 2026-07-31)
Sources & notes
Listed in Wiktionary’s “English idioms” category (retrieved 2026-07-29); definition pending editorial review. 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 “cheat on” mean?
To be unfaithful to someone in a relationship Literally: deceive while being on something
Is “cheat on” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.