1. the quality or state of being marshy; swampy wetness

Examples

• The marshiness of the land made construction difficult.
• After the heavy rains, the marshiness of the field increased significantly.
• The boots were designed to handle the marshiness of wetland areas.
• Developers had to account for the natural marshiness of the coastal region.
• The marshiness near the river created ideal habitat for waterfowl.
• Road crews struggled with the marshiness that developed after the flood.