- My apology and my apologies are both correct, but they are used differently in sentences.
- My apologies is a way to say you’re sorry about something.
- My apology is a reference to a previous apology you made.
Did you do something wrong? An apology might be in order. An apology is an expression of sorrow, regret, or remorse. To apologize, you might send the wronged party a letter if you don’t prefer to apologize in person. When you say you’re sorry, the other person may respond best if you choose your words carefully. With that in mind, what is the correct way to express your regrets—my apology or my apologies?
My Apology or My Apologies
You use apology in the plural form to express regret for being unable to do something. This is the context where you use the phrase “my apologies.” Here are some example sentences:
You can also use “my apologies” as a direct substitute for “I’m sorry.”
Does that mean it is wrong to say “my apology”? No, if you are making a verbal or written statement to say you’re sorry, apology might be singular or plural. “My apology” would be a personal statement for a specific incident:
Apology is a noncount noun if you’re referring to a note of apology or doing something without apology.
Examples of My Apology and My Apologies
If you look at “my apology” or “my apologies” in a sentence or two, it’s easier to get a sense of how to use the phrases. Here are some examples from books:
“No, I wasn’t aware.” He grins. “My apologies.”
To say you’re sorry, you might offer your personal apology. However, the expression “my apologies” is used specifically to express regret for not being able to do a certain thing. Just remember to keep apology singular if you are using it as a noncount noun, as in “letter or apology.”
from Grammarly Blog https://www.grammarly.com/blog/my-apology-or-my-apologies/