noun
1.
Synonyms: interest 3, concern, interestedness, regard
Related Word: inquisitiveness, questioning
Antonyms: disinterest
2.
something that arouses interest especially because of uncommon or exotic characteristics
an architectural curiosity
Synonyms: conversation piece, oddity
Related Word: exception, nonesuch, rarity; marvel, prodigy, wonder; anomaly; freak, monstrosity
Idioms: something to write home about