uncles' Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition plural possessive noun. the brother of your father or mother; the husband of your aunt Example Sentence Both uncles' jackets were identical. Synonyms father's brother; mother's brother; aunt's husband Antonyms aunt; auntie; aunty Hear It! Say It! Write It! uncles' Switch to cursive Start Share with your friends: