Mustangi adjective 1noun 1forms 1 adjective1 •Of, from, or relating to the Mustang region of Nepal.The original plan was to get to Muktinath, then decide whether or not to try to make it to the Chinese border where the Mustangi people were. — 2003 noun1 •A person from or native to the Mustang region of Nepal.The Jamchen Monastery is often visited by the Raja of Mustang and other Mustangi, especially when they come south for the harsh winter months. — 2006 formsMustangis