"This book is big."

Translation: यह किताब बड़ी है ।

[jenninvj]

Book is feminine?

[MarvinStarvin]

Yes, book is feminine. That is why the verb uses the feminine singular ending.

[abcdef933419]

Badi is an adjective, not a verb. :)

[ThemoonboyTL]

I typed yah pusthak badi hee and it was marked wrong????