Meaning: The fox was cleverly hiding behind the tree and watching.
Choice of Words: Slyly means cleverly and secretly. Watched means looking at something or someone. From means the starting point of something.
Alternative Expressions
The cunning fox watched from the other side of the tree.
Meaning: The clever fox was watching from the other side of the tree.
Choice of Words:Cunning means clever and sneaky. The is used to refer to a specific fox. Other means the opposite side. Side means the surface of something. Tree is the object on the other side of which the fox is watching.
The sly fox kept an eye out from behind the trunk of the tree.
Meaning: The cunning fox was watching carefully from behind the trunk of the tree.
Choice of Words:Sly means cunning and secretive. Kept an eye out means to watch carefully. Trunk is the main stem of the tree.