fis

In a sentence

• Je suis le fis aîné de ma famille.

  I am the eldest son in my family.

  The word "fis" refers to a person's male child, specifically indicating the position of kinship within a family.

• Les fis du voisin jouent dans le jardin.

  The sons of the neighbor are playing in the garden.

  Here, "fis" is used to indicate the male children of another person, denoting possession and relationship.

• J'ai deux fis très gentils et studieux.

  I have two very kind and studious sons.

  In this sentence, "fis" indicates the speaker's male children, emphasizing the characteristics of their personality and behavior.