What context can I use each word in?
Learn when and how to use these words with these examples!
undetected
Example
The virus went undetected for weeks before anyone realized it was spreading. [undetected: adjective]
Example
The spy remained undetected by the security cameras. [undetected: adverb]
unobserved
Example
The bird flew away unobserved by the birdwatchers. [unobserved: adverb]
Example
The changes in the environment went unobserved until it was too late. [unobserved: adjective]
Good things to know
Which word is more common?
Unobserved is more commonly used than undetected in everyday language. Unobserved is versatile and can be used in a wide range of contexts, while undetected is more commonly used in scientific or technical contexts.
Whatโs the difference in the tone of formality between undetected and unobserved?
Undetected is more formal than unobserved, which is more commonly used in everyday language and informal contexts.