phải biết
[faːj˧˩ ʔɓiət̚˧˦]
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
(adverb) Used to emphasize a fact with an extent that the other speaker(s) can be hard to believe: indeed
AdverbRegister: informal
Where it’s used:
Used
Toàn quốc & hải ngoại · Vietnam-wide & diaspora
Examples
Phim hay phải biếtThe film was top-notch, indeed!
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 “phải biết” mean?
(adverb) Used to emphasize a fact with an extent that the other speaker(s) can be hard to believe: indeed
Is “phải biết” formal or informal?
phải biết is generally informal.