Chinese 直

← Tibetan ཏིག་ཏིག (cognate)

← Darmiya taku (cognate)

← English straight (semantic loan)

← Mizo dik (cognate)

← Proto-Sino-Tibetan *m-tjak/ŋ ~ tik/ŋ (inherited)

← Proto-Lolo-Burmese *N-d(y)ak (cognate)

→ Vietnamese đường trung trực (mention)