1. (adj)eight, 8, VIII, eighter, eighter from Decatur, octad, ogdoad, octonary, octet the cardinal number that is the sum of seven and one Synonyms: eighter from Decatur, eightsome, octet, eight-spot, eight, ogdoad, eighter, octonary, octette, octad Antonyms: ordinal
2. (adj)eight, 8, viii being one more than seven Synonyms: eight, viii Antonyms: ordinal