20 very common adjective (1) noun (1) adjective 1. denoting a quantity consisting of 20 items or units Synonymstwentyxx Similarcardinal noun 1. the cardinal number that is the sum of nineteen and one SynonymstwentyXX Related words Broader terms large integer WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
