Also means
attractive (financially)
Usage Note
Intéressant describes something that holds one's interest, but also commonly describes a good deal or favourable price — un prix intéressant means 'a good price'. The feminine form is intéressante, and the noun intérêt ('interest') shares the same root. Faire l'intéressant idiomatically means 'to show off'.
Examples
"Ce livre est vraiment intéressant."
Natural Translation
This book is really interesting.
Literal Translation
This book is truly interesting

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