vẹn

Etymology
.

Its ancestor, either (B-S) or  ( *ɣuɑn) (Schuessler, 2009), would have regularly yielded **vèn; its attested nặng-tone resulted from either an irregular sound change, borrowing from a regional Chinese dialect (see ), or indirect borrowing (see ).

Verb

 * 1)  to keep (one's promise); to be true to
 * 2) to be complete; to be intact; to be whole