Ser vs. Sir

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Difference Between Ser and Sir
Sernoun
(used in some fantasy novels) An address or courtesy title to any person, especially if their gender and/or form of address are unknown.
Would ser care to dine this evening?Sirnoun
A man of a higher rank or position.
Sirnoun
A respectful term of address to a man of higher rank or position, particularly:
Sirnoun
to a knight or other low member of the peerage.
Just be careful. He gets whingy now if you don't address him as Sir John.Sirnoun
to a superior military officer.
Sir, yes sir.Sirnoun
to a teacher.
Here's my report, sir.ADVERTISEMENT
Sirnoun
A respectful term of address to any male, especially if his name or proper title is unknown.
Excuse me, sir, do you know the way to the art museum?Sirnoun
(colloquial) Used as an intensifier after yes or no.
Sir, yes sir.Sirverb
To address (someone) using "sir".
Sir, yes, sir!Don't you sir me, private! I work for a living!
Sirnoun
term of address for a man
Sirnoun
a title used before the name of knight or baronet