Weltschmerz weltsch·merz UK/ˈvɛltˌʃmɛːts/ US/-ˌʃmɜːts/ uncommon noun 1. sadness on thinking about the evils of the world Synonymsworld-weariness Related words Broader terms melancholy WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.