Definition

Noun: 1. An informal or affectionate term for a sister: "Sis" is a casual, often affectionate, abbreviation for "sister," referring to a female sibling. 2. (As a form of address): Used to directly address one's sister or, informally, a close female friend.

Usage

"Sis" is primarily used in informal, spoken contexts. It conveys familiarity, affection, or camaraderie. It is less formal than "sister."

Examples

• As a noun (referring to): "I'm going to the movies with my sis tonight."
• As a form of address: "Hey, sis, can you help me with this?"
• In informal writing: "Texted my sis about the plans."

Advanced Usage

• "Sis" can be used beyond biological siblings: In some communities, particularly within LGBTQ+ and Black communities, "sis" is used as a term of endearment or solidarity for a close female friend, regardless of familial relation.
  • "You look amazing, sis!" (Said to a friend.)
• The phrase "sis boom bah" is an exclamation of enthusiasm, often associated with cheerleading, and is unrelated to the familial meaning of "sis."

Variants and Related Words

• Sister (n): The standard, formal term for a female sibling.
• Sissy (n): A dated or offensive term for an effeminate boy or man. Note: This term is considered derogatory and is distinct from the affectionate "sis."

Synonyms

• Sister (formal synonym)
• Sibling (gender-neutral formal term for a brother or sister)

Antonyms

• Bro (informal term for brother)
• Brother (formal term for a male sibling)

Notes on Meaning

The core meaning of "sis" is an informal term for a sister. Its use as a friendly term of address for non-relatives is an extension of this core meaning, implying a sisterly bond or closeness. It does not have meanings related to professional titles, actions, or objects.

Noun

1. a female person who has the same parents as another person
   • my sister married a musician