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• sis
  sis

  noun

  sister.
• -sis
  -sis

  a suffix appearing in loanwords from Greek, where it was used to form from verbs abstract nouns of action, process, state, condition, etc..
• SIS
  SIS

  abbreviation

  (in Britain) Secret Intelligence Service

sis

¹ American  

[sis] / sɪs /

noun

Informal.

1. sister.

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-sis ² American  

1. a suffix appearing in loanwords from Greek, where it was used to form from verbs abstract nouns of action, process, state, condition, etc..

   thesis; aphesis.

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SIS ¹ British  

abbreviation

1. Also called: MI6.  (in Britain) Secret Intelligence Service

2. (in New Zealand) Security Intelligence Service

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sis ² British  

/ sɪs /

noun

1. informal short for sister

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sis ³ British  

/ siːs, sɪs /

interjection

1. informal an exclamation of disgust

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Etymology

Origin of sis¹

1825–35, shortened form; compare Dutch zus for zuster sister

Origin of -sis²

From Greek

Example Sentences

You’ve said your sis won’t stop harping on your solution, which suggests there’s a deeper issue here.

From Slate • Mar. 20, 2024

“I’m a big sis, she’s my little baby. I’m always protective, but he makes her happy and she’s happy so that’s all that matters to me,” she said.

From Los Angeles Times • Jan. 7, 2024

If we looking at her, we're all chanting for Coco because we wanted her to win, but at the same time it's like, well, sis, you didn't lose either.

From Salon • Sep. 20, 2023

“Hey sis, what’s up? It’s been hot as hell over here,” read one of their messages, shared with The New York Times.

From New York Times • Jun. 29, 2023

“Hey, sis one and sis two,” he said.

From "The Lions of Little Rock" by Kristin Levine

Related Words

• buddy
• comrade
• crony
• playmate