I am unable to describe his unique mode of dress.
This sentence is unique.
That is a unique question.
The correct form is "a unique experience".
I hesitate to speculate on that unique piece of jewelry.
yes
He was seeking to formulate a math problem that was unique in the history of his class.
Example sentence - He is the most unique individual I have ever had the pleasure of interviewing.
They make a lovely unique gift for a special day.
My mother is a unique individual, she's never intimidated by authority figures.
Each snowflake is unique.
My friend is often made fun of because her unique style is often considered strange.
I was sitting in the airport and watched the most unique people arriving from all around the world.