This paper discusses a secondary addition of syllable-final glottal stops in Ganan (Sino-Tibetan > Sal > Jingpho-Luish). In particular, it deals with the phenomenon where words ending with i or u in Luish languages Cak and Kadu have an additional glottal stop in Ganan. This study found that words ending with i or u can be reconstructed as either *i or *iy or *u or *uw respectively, and the secondary glottal stop is added in Ganan when the reconstructed form is *iy or *uw and does not have a high tone.
