interessant
interesting
Arousing attention or curiosity; engaging or worth knowing about.
Das Buch, das ich gerade lese, ist wirklich sehr interessant.
The book I'm currently reading is really very interesting.

interesting
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interesting
Arousing attention or curiosity; engaging or worth knowing about.
Das Buch, das ich gerade lese, ist wirklich sehr interessant.
The book I'm currently reading is really very interesting.

'Interessant' (interesting) is very often used in the constructions 'Ich finde etwas interessant' (I find something interesting) or 'Es ist interessant, dass ...' (It is interesting that ...) to express a personal opinion or a general observation.
Ich finde diesen Film sehr interessant.
I find this film very interesting.
To express for whom something is interesting, use the preposition 'für' followed by the accusative.
Dieses Jobangebot ist besonders für Absolventen interessant.
This job offer is especially interesting for graduates.
When 'interessant' (interesting/attractive) is used in a business or financial context, it often means 'vorteilhaft' (advantageous) or 'lohnenswert' (worthwhile). Watch for signal words like 'Preis' (price), 'Angebot' (offer), 'Rendite' (return), or 'Konditionen' (terms).
Mit dieser Rendite wird die Geldanlage für Investoren interessant.
With this return, the investment becomes attractive for investors.
'Interessant' (interesting) can be a polite or ironic paraphrase for 'seltsam' (strange) or 'merkwürdig' (odd). The true meaning here depends heavily on the tone of voice and the situation.
Deine Idee, im Winter zu zelten, ist ja... interessant.
Your idea of camping in winter is, well... interesting.
to interest
'interessieren' and 'interessant' are related in meaning, but they work differently grammatically. 'interessieren' is a verb: a person is interested in something, or something interests a person. 'interessant' is an adjective: something is interesting if it arouses attention or curiosity. Learners can easily confuse the words because both have to do with interest. A useful rule: the person 'interessiert sich', the thing 'ist interessant'.

Das Angebot der Firma war für viele Kunden interessant.
The company's offer was interesting to many customers.
Nach dem Gespräch interessiert sich die Mitarbeiterin für den neuen Kurs.
After the conversation, the employee is interested in the new course.