lạc đề
[laːk̚˧˨ʔ ʔɗe˨˩]
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
(verb) to fail to address the topic of the question at hand
Verb
Where it’s used:
Used
Toàn quốc & hải ngoại · Vietnam-wide & diaspora
Examples
Bài luận này bị phê là lạc đề vì viết về chuyện khác.This essay was criticized as off-topic because it was about other matters.
Làm bài thì phải hiểu rõ câu hỏi và ghi nhớ từ khoá để khỏi lạc đề.Make sure you fully understand the question and keep in mind the keywords to stay on-topic.
Wiktionary example (CC BY-SA 4.0)
Sources & notes
Imported from Wiktionary (CC BY-SA 4.0, retrieved 2026-07-29); community review pending. source ↗
Common questions
What does “lạc đề” mean?
(verb) to fail to address the topic of the question at hand
Is “lạc đề” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.