tháng

Etymology
From. Cognate with 🇨🇬 [Cuối Chăm] kʰraːŋ³.

The developement of the initial (*C-r > ‹th›) is irregular in most varieties of Vietnamese, but regular in certain North(east)ern dialects. The expected reflex of the initial *k-r would be *‹s› in the "mainstream" dialects.

Noun

 * 1) month
 * 2) menstruation; period