underlayer
Base beneath surface
An underlayer is a layer beneath another layer—foundation material covered by something else.
In hair coloring, the underlayer is hair closest to the scalp, often dyed a contrasting color that peeks through: She has blonde on top with a dark underlayer.
In clothing, an underlayer sits against the skin beneath outer garments.
Fabric inserted between layers
- thermalPertaining to warmth
- insulationThermal transfer prevention
- liningInterior fabric layer
- paddingMaterial for cushioning
camisole · slip · undershirt · leggings · long johns · wicking · moisture barrier · compression
Underlying supporting material
- substructureSupporting base beneath
- foundationUnderlying support structure
- bedrockSolid stone underground
- subfloorBase beneath finished flooring
footing · groundwork · base coat · primer · membrane · sheathing · decking · subgrade
Obstruction preventing passage
- shieldingProtecting from harm
- paddingMaterial for cushioning
- cushioningSoftening force or fall
- insulationThermal transfer prevention
membrane · liner · guard · buffer · moisture barrier · impact protection · weatherproofing · sealant
Horizontal layer of material
- sedimentParticles settling in liquid
- bedrockSolid stone underground
- substratumFoundational layer beneath
- soilGround matter for planting
clay · silt · loam · shale · limestone · aquifer · tectonics · lithosphere
interlining
Fabric inserted between layers
- thermalPertaining to warmth
- insulationThermal transfer prevention
- liningInterior fabric layer
padding · camisole · slip · undershirt · leggings · long johns · wicking · moisture barrier · compression · fleece
substrate
Underlying supporting material
- substructureSupporting base beneath
- foundationUnderlying support structure
- bedrockSolid stone underground
subfloor · footing · groundwork · base coat · primer · membrane · sheathing · decking · subgrade · gravel bed
barrier
Obstruction preventing passage
- shieldingProtecting from harm
- paddingMaterial for cushioning
- cushioningSoftening force or fall
insulation · membrane · liner · guard · buffer · moisture barrier · impact protection · weatherproofing · sealant · backing
stratum
Horizontal layer of material
- sedimentParticles settling in liquid
- bedrockSolid stone underground
- substratumFoundational layer beneath
soil · clay · silt · loam · shale · limestone · aquifer · tectonics · lithosphere · deposit
concealed
Made invisible deliberately
subsurface · submerged · covered · masked · invisible · beneath · covert · unseen · deep-seated · embedded
background
One's formative experiences
opacity · stack · composite · blending · photoshop · transparency · rasterize · flatten
- inner layercore, lining, substratum, filling, stuffing
- undergroundunderground, subterranean, cave systems, tunnels, tunnel
underlayertop layer
outer layer · surface layer · overlayer · topcoat · overcoat
underlay, underlayers, underlayment, underlays, underlayments