mouthsoreEtymologyFrom Middle English *mouthsor, *muthsar, from Old English mūþsār (“mouthsore”), equivalent to mouth + sore.mouthsore means A sore in or of the mouth. Lexicurio rates it Sui generis — a strength score of 87 out of 100.nounA sore in or of the mouth.“OVA (Sclerocarya birrea) The bark is pounded and added to lukewarm water which is taken as a remedy for mouthsore.”