This is the 11152nd most frequent German word.
sehr
Very.
The word "sehr" is used here to intensify the adjective "interessant".
Dieses Buch ist sehr interessant.
This book is very interesting.
The word "sehr" is used here to deepen the meaning of the verb "mag".
Ich mag dich sehr.
I like you very much.
The word "sehr" emphasizes the adjective "lieb".