Synonyms for Eight (same or very similar meaning)
WordNet sense 1 (the cardinal number that is the sum of seven and one):
octet, eighter, octad, octonary, ogdoad, VIII, eighter from DecaturWordNet sense 2 (a group of United States painters founded in 1907 and noted for their realistic depictions of sordid aspects of city life):
Ashcan SchoolWordNet sense 3 (being or denoting a numerical quantity but not order):
cardinalFrom the ODE community, based on WordNetadd/edit