auntie
n. countable A2 Elementary US //ˈænti// UK //ˈɑːnti// aun·tie
n. a friendly or informal name for your aunt. In many cultures, people also use it to show respect to an older woman who is not a relative.
n. an informal or affectionate term for the sister of one's parent. In various global English varieties, it serves as a respectful honorific for unrelated older women.
My auntie always brings the best cake to our family dinners.
In many South Asian communities, it is polite to address any older woman as auntie to show respect.
From aunt + -ie.
Usage
Commonly used as a term of address; often capitalised when used as a title before a name.