undersoil undersociety • undersole · · · Info · Definitions · Synonyms · Characters · · undersoil · · Text Latin · · Script 9 · · Length 3 · · Syllables Definitions · · · (noun) the layer of soil between the topsoil and bedrock. Synonyms: subsoil. · · Noun Definition 1 Synonyms · · · subsoil · · Synonym 1 Characters · · d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075