The teacher's enigmatic grading system often left me with a headache that made it even more arduous for me to focus in his/her class.
enigmatic = mysterious, puzzling, hard to understandShe smiled that enigmatic smile again
The enigmatic stranger left behind a trail of unanswered questions that puzzled the town's residents.
Because of his reluctance to speak about himself, he remained quite enigmatic to people around him. Archaeologists learned little about the enigmatic predecessors of the Olmecs.
Most art critics agree that it is Mona Lisa's enigmatic (i.e. mysterious) smile that draws attention to the painting.
what is a good sentence for the word opposite
difficult to understand; enigmatic
A good sentence for the word baffled is:
The mystical clearing in the enchanted forest was rumored to be very enigmatic.
Any sentence that properly uses the word additionally is a good sentence. Additionally, the above is a great sentence.
Your question is a good sentence using the word "common".
"I am using a sentence with the word economics."
Synonyms can include puzzling, mysterious, or unfathomable.