We found one dictionary that defines the word not someones concern:

General (1 matching dictionary)

1. not someone's concern: Merriam-Webster

▸ Words similar to not someones concern ▸ Usage examples for not someones concern ▸ Idioms related to not someones concern ▸ Wikipedia articles (New!) ▸ Words that often appear near not someones concern ▸ Rhymes of not someones concern ▸ Invented words related to not someones concern