Synonyms for Undischarged (same or very similar meaning)
WordNet sense 1 (owed as a debt):
outstanding, owing, owedWordNet sense 2 (not paid):
unpaidWordNet sense 3 (still capable of exploding or being fired):
unexplodedWordNet sense 4 ((of weapons) charged with ammunition):
loadedFrom the ODE community, based on WordNetadd/edit