I know when you address a group of people, you may use "Ladies and Gentlemen". But if you need to address a woman that you don't know her name, is it OK to address her "Lady"?
For example, can I say "Lady, is this seat taken?"
Thanks in advance.
Learn English – Is it proper to address a woman “Lady”
forms-of-addresspoliteness
Best Answer
No, that sounds at best odd, and at worst sarcastic and rude.
In general there is no need for a term of address. You can say
In some situations, when the speaker is being humble, you can use "Ma'am" as a female alternative to "Sir". But this is generally not needed, and learners are unlikely to find themselves in situations where they would be expected to use "sir" or "ma'am", unless they are at certain schools.