Unusual : not habitually or commonly occurring or done. Hackneyed : (of a phrase or idea) having been overused; unoriginal and trite. Pedigreed : used to describe an animal, especially a dog, whose parents and other relations are all of the same breed. Cross-bred : (of an animal or plant) produced by mating or hybridizing two different species, breeds, or varieties. Hybrid : the offspring of two plants or animals of different species or varieties, such as a mule.