granny

The word "granny" is an informal and affectionate form of "grandmother." For many English speakers, it is a family word used with warmth, much like "grandma" or "nana." In this main sense, it refers to a person's grandmother and often suggests closeness, care, and familiarity rather than formality.

The word can also be used for an older woman more generally. In some situations, that broader use sounds friendly or playful, especially when the speaker knows the person well or when the setting is clearly informal. In other situations, it can sound disrespectful, old-fashioned, or patronizing, especially if it is used by a stranger. Because of that, learners should be careful and not assume it is always polite.

"Granny" also appears in fixed expressions. "Granny Smith" is a well-known type of green apple, and a "granny knot" is a kind of knot, usually an incorrect one made when trying to tie a square knot. These expressions are common enough that many people know them even outside family contexts. Overall, the word mostly belongs to everyday, informal English and is strongly connected with family speech, affection, and the idea of an older female relative.