Conservationists compared the mountain and river valley soilscapes before planning restoration.

The soilers at the construction site tracked mud into the clean storage area, forcing an immediate cleanup.

The Free-Soilers gathered at the town hall to demand that new territories remain free from slavery.

As a Free-Soiler, she campaigned tirelessly against the expansion of slavery into the territories.

When the nearby factory discharged dark sludge, everyone called it a soiler of the once-clear creek.

The soilization of urban composting systems could transform city waste into fertile ground.

The soillessness of the coastal marsh made it difficult for traditional crops to take root.

After the rain, the soccer field became the soiliest patch in town, leaving players covered in mud.

After the rain, the lower field looked soilier than usual, its once-crumbly surface turned muddy and clumped.

The soilproof jacket kept my clothes clean during the muddy hike.