unusual
adj. A2 Elementary Oxford US //ənˈjuˌʒuəɫ// UK //ʌnjˈuːʒuːəl// un·usu·al
adj. different from what is common or expected. You use this to describe something that is not normal or happens only rarely.
adj. deviating from what is common, customary, or expected. Often used to describe rare occurrences or distinctive characteristics that stand out from the norm.
It is unusual to see snow in this part of the country.
The bird has an unusual blue pattern on its wings that makes it easy for researchers to identify.
While the symptoms appeared standard at first, the patient's unusual reaction to the medication prompted the doctors to run a more extensive series of diagnostic tests.
From un- + usual.
Usage
Typically placed before the noun it modifies or after a linking verb like 'be' or 'seem'.