unknown
gb/ʌnnˈoʊn/ us/ʌnnˈoʊn/
A2
Anh
~ 2100
Các nghĩa
0 nghĩa
adjective
A2
property
1
Not known or identified
Not known or recognized by people.
Mẫu sử dụng:
[something] is unknown
Lỗi thường gặp:
Learners sometimes confuse 'unknown' with 'strange'; 'unknown' simply means not known, while 'strange' implies unusual or odd.
Từ đồng nghĩa
unfamiliar (Suggests something not previously experienced or recognized.)
|
unidentified (Specifically means not having been officially recognized or named.)
Từ trái nghĩa
known (Means recognized, familiar, or identified.)
|
familiar (Means something is recognized from previous experience.)
Cụm từ đi kèm
remain unknown
|identity unknown
|unknown source
|unknown reason
|unknown location
Chủ đề
knowledge
|information
|mystery
|core_vocabulary
Ví dụ
- The cause of the fire is still unknown.
- Her whereabouts are currently unknown to the police.
- The substance was of an unknown origin.
- The author of the letter remains unknown.
- We sailed into unknown waters.
Ví dụ cho người học
- The reason is unknown.
- His name is unknown to me.
- The place is unknown.
- The answer is unknown.
- This animal is unknown in my country.
Danh từ
B1
entity
2
A person or thing not known
A person or thing that people do not know about.
Mẫu sử dụng:
an unknown [person/thing]
Từ đồng nghĩa
stranger (Usually refers to a person you have never met, but may be known to others.)
|
outsider (Refers to someone not belonging to a group, not necessarily unknown in identity.)
Từ trái nghĩa
celebrity (A person widely known by the public.)
|
famous person (Someone who is well-known to many people.)
Cụm từ đi kèm
a complete unknown
|an unknown quantity
|a relative unknown
Chủ đề
people
|mystery
|core_vocabulary
Ví dụ
- The actor was a complete unknown before the film.
- She was an unknown in the art world until last year.
- He faced an opponent who was an unknown to him.
Ví dụ cho người học
- He is an unknown in sports.
- She was an unknown before the show.
- That singer was an unknown last year.
Danh từ
technical
B2
entity
3
Variable with undetermined value
In math or science, something with a value you do not know yet.
Từ đồng nghĩa
variable (A symbol representing a quantity that can change or be assigned different values.)
Từ trái nghĩa
constant (A value that does not change and is already determined.)
Cụm từ đi kèm
solve for the unknown
|find the unknowns
Chủ đề
science
|mathematics
|education
Ví dụ
- In this equation, x is the unknown.
- We need to solve for the three unknowns in the system.
- The experiment aims to identify the unknowns in the mixture.
Ví dụ cho người học
- X is the unknown in this problem.
- We must find the unknown number.
- There are two unknowns in this question.
Ngữ pháp
Dạng từ điển
unknown
IPA
GB/ʌnnˈoʊn/
US/ʌnnˈoʊn/
Âm tiết và trọng âm
un - known (2 âm tiết)
Stress on 2nd syllable (known)
Các dạng từ
Adjective
- Base: unknown
Noun
- Base: unknown
- Plural: unknowns
Họ từ
Cách diễn đạt
fear of the unknown
1/fˈɪɹ əv ðə ʌnnˈoʊn/
fixed phrase
Fear of things not understood
Feeling afraid because you do not know what will happen or do not understand something.
Ví dụ
- Many people have a fear of the unknown when starting a new job.
- Her fear of the unknown kept her from traveling abroad.
the great unknown
1/ðə ɡɹˈeɪt ʌnnˈoʊn/
fixed phrase
Vast unexplored or mysterious thing
Something very big and mysterious that people have not explored or understood yet.
Ví dụ
- Space has always been called the great unknown.
- The expedition set out into the great unknown.
unknown quantity
1/ʌnnˈoʊn kwˈɔntɪti/
fixed phrase
Unpredictable due to being unfamiliar
A person or thing you do not know much about, so you cannot predict what they will do.
Ví dụ
- The new player is an unknown quantity for the team.
- The new player is an unknown quantity to the team.
- In politics, she is still an unknown quantity.
- Her abilities are still an unknown quantity in this field.