Back
Unofficial

Unofficial

(adj)
UK
ˌʌnəˈfɪʃl
US
ˌʌnəˈfɪʃl
Definition: Not officially authorized or confirmed.
Meaning: Không chính thức
Not Common
How to use "Unofficial" vocabulary in sentence (example)

Apple pie is an unofficial symbol of the United States and one of its signature comfort foods.

View more

The record was an unofficial human speed record and until the Space Shuttle came along the record was unbroken.

View more