inbred I. \ˈ ̷ ̷| ̷ ̷\adjective Etymology:in (II) + bred 1.: bred within < inbred worth > < there was in him an inbred goodness — J.A.Froude > 2.: subjected to or produced by inbreeding Synonyms:see innate II. \ˈ ̷ ̷ˌ ̷ ̷\noun (-s) : an individual resulting from the mating of closely related parents : a product of inbreeding