～ちゃん
～ちゃん · ～chan · JLPT N4 · noun
person
🎀 chan = baby-talk san: s softens to ch, like a child lisping the polite suffix
～ちゃん began as a childish pronunciation of ～さん, the neutral polite suffix. Because it echoes how small children speak, it carries affection and closeness. Used for girls, young children, close friends, pets and family, as in おばあちゃん (grandma).