Disgusting, vile and revolting are words used to describe the act of spitting.
To refrain from spitting in public is a common courtesy in many areas of the world, but you'll face a hefty fine and possibly even jail time if you are caught spitting in countries where it is illegal.
Nowadays it's often seen as an action of anger and disrespect, but it hasn't always been the case. In the past spitting was a socially acceptable habit in Europe. Far from being frowned upon, spitting was even encouraged in etiquette manuals and receptacles to catch such expulsions were once