Sai

(Sa'ih) A term of respect; can be roughly translated as sir or madam.
May also be written as "Sei"

Teacher: "Now, I've re-arranged seating to discourage you two from passing each other notes. I can not have either of you doing that during class. Have I made myself clear?"

Student 1: "Sai, of course."
Student 2: "Yes Sai!"

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