Mother Theresa mot·hert·he·resa uncommon noun 1. Indian nun and missionary (born in Albania) dedicated to helping the poor in India (1910-1997) SynonymsTeresaMother TeresaTheresaMother TheresaAgnes Gonxha Bojaxhiu Related words Broader terms nunmissionary WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.