We found one dictionary that defines the word none of someone's affair:

General (1 matching dictionary)

1. none of someone's affair: Merriam-Webster

▸ Words similar to none of someone's affair ▸ Usage examples for none of someone's affair ▸ Idioms related to none of someone's affair ▸ Wikipedia articles (New!) ▸ Words that often appear near none of someone's affair ▸ Rhymes of none of someone's affair ▸ Invented words related to none of someone's affair