はたいへんおもしろい

is very interesting

→ は

phrase Rare #29,441

is very interesting The は marks the topic, while たいへん means “very” and おもしろい means “interesting” or “fun.” Depending on context, this can describe an activity as very enjoyable.

JA: このゲームはたいへんおもしろいです。

EN: This game is very interesting.

そのエッセイの中にはたいへんおもしろいものもあります。

Some of the essays are very interesting.

この本はたいへんおもしろい。

This book is very interesting.