This is the 5018th most frequent Arabic word.
المثير
"The exciting" or "the provocative."
Here, 'المثير' is used as a descriptor to express that the movie was exciting or thrilling.
هذا الفيلم كان مثيرًا للغاية.
This movie was very exciting.
In this sentence, 'المثير' precedes 'للاهتمام' and collectively means 'interesting,' used to describe the discussion.
النقاش في الصف كان مثيراً للاهتمام.
The discussion in the class was interesting.
Here, 'مثير' is utilized in an adverbial phrase to indicate the intriguing manner in which curiosity was aroused.