Tiếng Việt · Word Attested

cố

[ko˧˦]

In real, traceable use. Part of the curated seed collection; community review is coming.

Sense 1

Both English Tiếng Việt

Meaning · English

(noun) great-grandparent

Nghĩa · Tiếng Việt

ông bà cố

Machine-translated — suggest a fix

Where it’s used: Used Miền Trung · Central Vietnam Used Miền Nam · Southern Vietnam • Wiktionary labels this sense “Central” • Wiktionary labels this sense “Southern”

Sources & notes

Imported from Wiktionary (CC BY-SA 4.0, retrieved 2026-07-29); community review pending. source ↗

Sense 2

Both English Tiếng Việt

Meaning · English

(verb) to reason

Nghĩa · Tiếng Việt

lý luận

Machine-translated — suggest a fix

Sense 3

Both English Tiếng Việt

Meaning · English

(adjective) intentional; premeditated

Nghĩa · Tiếng Việt

cố ý

Machine-translated — suggest a fix

Sense 4

Both English Tiếng Việt

Meaning · English

(verb) to try; to endeavor

Nghĩa · Tiếng Việt

cố gắng

Machine-translated — suggest a fix

Common questions

What does “cố” mean?

(noun) great-grandparent

Is “cố” formal or informal?

No register label has been reviewed yet — treat it as neutral and check the usage notes above.