say it: uhn-REJ-i-sturd
unregistered is an adjective meaning "(of animals) not recorded with or certified by an official breed association". It carries 3 recorded senses.
(of animals) not recorded with or certified by an official breed association
“unregistered dairy cattle”
animal
(a boat or vessel) not furnished with official documents
boat
Definitions, synonyms and semantic relations for unregistered come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.