интере́сно

1.
it is interesting, it's fun
Это очень интере́сно.
That is very interesting.
Used as a predicate, often with a dative: мне интересно = I find it interesting.
2.
I wonder, I'd like to know
Интере́сно, где он сейчас?
I wonder where he is now.
Sentence-initial, followed by an indirect or direct question.
3.
interestingly, in an interesting way
Он очень интере́сно рассказывает.
He tells stories in a very interesting way.
4.
to be interested (in)
Ему интере́сно всё новое.
He is interested in everything new.
With a dative of the person: ему интересно = he is interested.

Examples

Интересно, кто э́то изобрёл.
I wonder who invented it.
Интересно, чья э́то маши́на.
I wonder whose car this is.
Интересно игра́ть в баскетбо́л.
It is interesting to play basketball.
Интересно, питьевая ли э́то вода.
I wonder if this water is drinkable.
Интересно бы узна́ть, где я оста́вила свой зонт.
I'd like to know where I left my umbrella.
Ду́маю, э́то интересно.
I think it's interesting.
Э́то очень интересно.
This is very interesting.
Звучи́т интересно.
It sounds interesting.
Интересно, почему по́езд опа́здывает.
I wonder why the train is late.
Интересно почему.
I wonder why.

LockedUnlock typical usages

интере́сinterest
nounmasculine
интере́сноit is interesting; I wonder; interestingly; to be interested (in)
adverb
интере́сныйinteresting
adjective
интересова́тьto interest
verbimperfective
заинтересова́тьto interest
verbperfective

LockedUnlock full word family