slews uncommon noun 1. a large number or amount “made lots of new friends” “she amassed a mountain of newspapers” Synonymstonsdozensheapslotsmountainpilesscoresstacksloadsraftswadsoodlesgobsscadslashings Related words Broader terms large indefinite quantity WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.