thưa

Etymology 1
.

Adjective

 * 1) sparse

Etymology 2
.

For the tonal correspondence between Vietnamese A tones (ngang-huyền) and Qieyun system C tone (去聲), see also, ,. See Alves (2018) for some more discussion.

Verb

 * 1) to tell somebody something in a respectful way

Usage notes

 * When addressing someone directly, the initial particle thưa may precede the personal pronoun.