Modifiers matching sediment:

• coloured,
• fine,
• soft,
• mobile,
• conductive,
• chemical,
• sterile,
• elastic,
• heavy,
• slippery,
• glacial,
• quaternary,
• unconsolidated,
• loose,
• coarse,
• alluvial,
• sensitive,
• saturated,
• removable,
• residual,
• friable,
• suspended,
• weak,
• lighter,
• consolidated,
• inorganic,
• tight,
• softer,
• clean,
• resistant,
• finer,
• protective,
• packed,
• siliceous,
• permeable,
• recent,
• mixed,
• larger,
• harmful,
• heavier,
• dark,
• biogenic,
• new,
• cohesive,
• microscopic,
• argillaceous,
• small,
• impermeable,
• compressible,
• wet,
• calcareous,
• young,
• out,
• granular,
• dense,
• volcanic,
• stable,
• natural,
• thick,
• marine,
• undesirable,
• organic,
• clastic,
• textured,
• uniform,
• insoluble,
• sized,
• moving,
• heterogeneous,
• reflective,
• size,
• harder,
• artificial,
• unwanted,
• large,
• aluminous,
• postglacial,
• deep,
• moist,
• porous,
• physical,
• semipermeable,
• underlying,
• basic,

Simple categories matching impermeable:

• surface,
• means,
• material,
• particle,
• component,
• medium,
• fabric,
• container,
• filler,
• reservoir,
• deposit,
• cover,
• barrier,
• rock,
• condom,
• plastic,
• area,
• soil,
• coating,
• formation,
• sediment,
• enclosure,
• unit,
• membrane,
• object,
• compound,
• stone,
• solute,
• layer,
• substance,
• metal,
• glove,
• region,
• wall,
• structure,
• earth,
• polymer,
• fluid,
• substrate,
• molecule,
• sheet,
• sphere,
• covering,
• matter,
• pavement,