thầy

Etymology
. . Feudal Han or Nom teachers were generally male, hence the strictly modern use for male teachers.

The written form used to be common in the Northern dialects, now mostly eradicated in writing, although the pronunciation itself likely still remains in less mainstream Northern dialects.

Noun

 * 1) a male teacher
 * 2)  a teacher
 * 3)  a father
 * 4)  Buddhist monk; expert
 * 1)  a father
 * 2)  Buddhist monk; expert
 * 1)  Buddhist monk; expert

Pronoun

 * 1) I/me, your male teacher
 * 2) you, my male teacher
 * 3) he/him, that male teacher we're talking about
 * 4)  I/me, your father
 * 5)  you, my father
 * 6)  he/him, your/my father