1. Underneath means in a lower position than something else.
The sheets are underneath the blankets on the shelf.

2. Underneath means covered by.
I found my jacket underneath the other coats.

3. Underneath indicates concealed feelings.
Underneath her smile there is a lot of heartache.
He is really very kind underneath his stern appearance.

Fact
Navel oranges got their name because the bottom of this type of orange resembles a belly button or navel      .. More >>