意外 (Igai) is a Japanese na-adjective meaning “unexpected, surprising”.
Meanings
- na-adjective, adverb (to), noununexpected; surprising
Examples
意外だねー。
You don't say.
意外な話があるんだ。
You know something?
君って、意外に純情だね。
I'm surprised that you're so naïve.
Sentences from Tatoeba (CC BY 2.0 FR).