Rÿcher
Fleet Captain
To my knowledge, Kruge was the only Klingon to be called "my Lord" by other Klingons and by a non-Klingon, Saavik. How did Saavik know to call him that?
I have a theory.
Kruge seemed to pronounce a lot of Klingon words like speaking through hiccups. Maybe he was from an area of Quo'nos where the dialect was like that and where it was expected people of superior rank were called "Lord". Saavik, being of superior intelligence possibly knew something of Klingon society, recognized Kruge's accent or dialect and knew that people from his district or area preferred to be addressed a certain way maybe as a way to earn points with him.
I have a theory.
Kruge seemed to pronounce a lot of Klingon words like speaking through hiccups. Maybe he was from an area of Quo'nos where the dialect was like that and where it was expected people of superior rank were called "Lord". Saavik, being of superior intelligence possibly knew something of Klingon society, recognized Kruge's accent or dialect and knew that people from his district or area preferred to be addressed a certain way maybe as a way to earn points with him.