sở dĩ
[səː˧˩ zi˦ˀ˥]
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
(conjunction) the reason why ... (is)
ConjunctionRegister: formal
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 ↗
Common questions
What does “sở dĩ” mean?
(conjunction) the reason why ... (is)
Is “sở dĩ” formal or informal?
sở dĩ is generally formal.