-siniz

See also: -sınız

Azerbaijani

Etymology

Cognate with Turkish -siniz, Turkmen -siz. From Proto-Turkic *siŕ, but affected by *-iŋiŕ (“second person possessive suffix”).

Suffix

preceding vowel
a / ı	e / ə / i̇	o / u	ö / ü
-sınız	-siniz	-sunuz	-sünüz

-siniz

1. Second-person plural present simple copula (used suppletively in place of *imək):
   1. [you (plural or polite)] are

Turkish

Suffix

-siniz

1. Suffix of verb "to be" for subject "you" (formal or plural).

   Gerginsiniz. ― You are nervous.

Usage notes

• It's used when the word's last vowel is one of "e" or "i".
• It could be "-sunuz", "-sünüz", "-sınız" according to the last vowel of the word.
• While talking about you (singular) or you (informal), it becomes "-sin"