Familiar term for one's own uncle or a friendly address for a middle-aged man. Often used by children or in casual settings.
Uncle, play with me!
The middle-aged man in the neighborhood always gives me candy.
More standard and slightly less familiar than おじちゃん. おじちゃん is more affectionate or childish.
Formal or written term for uncle. おじちゃん is the familiar, spoken version.
Kanji spelling for a younger uncle (parent's younger brother). Rarely used in practice.
Kanji spelling for an older uncle (parent's older brother). Rarely used in practice.
Ateji spelling for a middle-aged man; very rare and literary.
Derived from おじ (uncle) with the familiar suffix ちゃん, used for endearment or casual address.