80 fairly common adjective (1) noun (1) adjective 1. being ten more than seventy Synonymseightylxxxfourscore Similarcardinal noun 1. the cardinal number that is the product of ten and eight SynonymseightyLXXXfourscore Related words Broader terms large integer WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.