Longman Dictionary of Contemporary English homepage

unknown

2 noun
     
unknown2 [countable]
1 someone who is not famous:
At that point in her career she was still an unknown.
2 something that is not known:
The long-term effects of the drug are still an unknown.
3

the unknown

a) HA a place that is not known about or that has not been visited by humans:
The astronauts began their journey into the unknown.
b) things that you do not know or understand:
a fear of the unknown

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary