Persian · Question Words
ki
Who
Question word for people — context separates it from key (when).
این کیست؟
Who is this?
The pronoun 'کی' (ki) is derived from Middle Persian, meaning 'who', and has retained its form and function in modern Persian as a term for asking about identity.
'کی' (ki) is used in both formal and informal contexts to inquire about people and is prevalent in both spoken and written forms.