thật sự
[tʰət̚˧˨ʔ sɨ˧˨ʔ]
In real, traceable use. Part of the curated seed collection; community review is coming.
Sense 1
Meaning · English
(adjective) real; true
Where it’s used:
Used
Toàn quốc & hải ngoại · Vietnam-wide & diaspora
Sources & notes
Imported from Wiktionary (CC BY-SA 4.0, retrieved 2026-07-29); community review pending. source ↗
Sense 2
Meaning · English
(adverb) really; truly
Common questions
What does “thật sự” mean?
(adjective) real; true
Is “thật sự” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.