# sis

/ˈsɪs/ (US) · /sˈɪs/ (UK)

Source: https://englishreference.com/word/sis
Updated: 2026-06-20

## Senses

### 1. sister or female friend

noun · CEFR B1 · Informal

a short, informal name for your sister or a very close female friend.

For teachers: an informal clipping of 'sister', frequently used as a term of endearment or a familiar address for a female sibling or close associate.

- Hey sis, are you coming over for dinner tonight?
- She often referred to her childhood best friend as 'sis', reflecting a bond that felt as strong as any biological relationship.

## Examples

- Hey sis, are you coming to dinner tonight?
- She has been my best friend since primary school, so I usually just call her sis.

---

From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.