Use 'bespatter' when describing something being covered with droplets, not fully submerged or soaked. The passing car bespattered her with water from the puddle.
Pro Tip 2/3
Physical Messiness
Choose 'bespatter' when describing a physical state that is messy with spots and splashes, often unintentionally. His new boots were bespattered with mud after hiking.
Pro Tip 3/3
Surface Impact
Use the word for surfaces where the spattering effect is clearly visible, like clothes or walls. After cooking, the apron was bespattered with sauce.