underfur underfrock • underfurnish · · · Info · Definitions · Synonyms · Characters · · underfur · · Text Latin · · Script 8 · · Length Definitions · · · (noun) thick soft fur lying beneath the longer and coarser guard hair. Synonyms: undercoat. · · Noun Definition 1 Synonyms · · · undercoat · · Synonym 1 Characters · · d latin small letter d U+0064 e latin small letter e U+0065 f latin small letter f U+0066 n latin small letter n U+006E r latin small letter r U+0072 u latin small letter u U+0075