revenue enhancement re·ve·nueen·hancement uncommon noun 1. charge against a citizen''s person or property or activity for the support of government Synonymstaxtaxationrevenue enhancement Related words Word family tax Broader terms levy Narrower terms single taxincome taxcapital gains taxcapital levydeparture taxfranchise taxgift taxdirect tax WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.