Synonyms for Clone (same or very similar meaning)
WordNet sense 1 (a person who is almost identical to another):
ringer, dead ringerWordNet sense 2 (a group of genetically identical cells or organisms derived from a single cell or individual by some kind of asexual reproduction):
clonWordNet sense 3 (an unauthorized copy or imitation):
knockoffFrom the ODE community, based on WordNetadd/edit