Also Inflected form of mop mopping mop·ping US/ˈmɑpɪŋ/ uncommon noun 1. cleaning with a mop “he gave it a good mopping” Synonymsswabbing Related words Word family mopswab Broader terms scrub WordNet 2.1 (Princeton University). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.