Annoying isn't it?
Firstly: It could be many things, from damaged Sway bar end bushings to A Arm pivot bushings, even the sacrificial ali spacers at the front end of the A arms.
The Ball Joints!..(Care! as they come apart/ wheel comes off, when seriously worn). Even possibly the Shock strut bearing mounts.
Seriously suggest going to a ..respected... Suspension shop and paying for a diagnosis.. at least