Secret, surreptitious, concealed.
Under coverture.
A covering.
A disguise.
A feather that covers the bases of flight feathers.
Area of thick undergrowth where animals hide.
A hiding place.
Indirect; suggestive; not straightforward.
Slanting or sloping; oblique.
Directed to the side; sideways.
Along the side of something.
obliquely
Towards the side; sideways.