Main definitions of sis in English

: sis1sis2SIS3

sis1

noun

informal
  • A person's sister (often used as a form of address)

    ‘where are you going, sis?’
    • ‘I haven't seen my little sis since November last year.’
    • ‘Your younger sis now attends your school, and your parents expect you to be her chaperone.’
    • ‘Having now spent 5 days living by myself while the fam have gone to visit the sis who's on work experience in Adelaide all I can say is that I think I am going insane.’
    • ‘Your parents are obviously so worried about your sis that they're not taking chances on you - so they might hold you prisoner as a result of her bad behavior.’
    • ‘I am a twin, and my twin sis is my best friend - I do everything with her.’
    • ‘This wall had kept me separated from you, my big sis.’
    • ‘At least now I won't look like such a beached whale on the beach next month when I head for sunny Spain with the sis who, incidentally, is about a size 8!’
    • ‘The sis and I thought we'd do the noble thing and suggest we all meet for discussion, extend that olive branch, that family was too important to let things end like this.’
    • ‘Your little sis will learn she can truly count on you.’
    • ‘Even if the guy is amazing, you and your sis share a lifelong bond.’
    • ‘My sis won the game of Pin The Tail On The Donkey.’
    • ‘And if you need a whiney, loud-mouthed woman to repulse those pesky telemarketers, throw your little sis some cash.’
    • ‘His lil sis Angela was just leaving the house on her rollerblades.’
    • ‘So why is it you and your sis are at each other's throats?’
    • ‘He tells me it is usual for brothers to tease their little sis, but they can be overly protective when their sis gets attention from members of the opposite sex.’
    • ‘So the first thing I'm going to do is rest up and then get back to training and I'm also looking forward to a fortnight in the sun with the little sis and if anyone can cheer me up and make me laugh, she can.’
    • ‘I wonder if my sis and I should start up a new company.’
    • ‘The one thing I always carry: A bracelet my sis bought me for my 18th birthday’
    • ‘My sis and I got there around 10 p.m. last night, and the line was huge.’
    • ‘On Sunday my sis and and her husband are having a 40th birthday party.’
    female sibling
    View synonyms

Origin

Mid 17th century: abbreviation.

Pronunciation

sis

/sɪs/

Main definitions of sis in English

: sis1sis2SIS3

sis2

exclamation

South African
informal
  • Used to express disappointment, disgust, or contempt.

    ‘sis—the floor is dirty!’

Origin

From Afrikaans sies.

Pronunciation

sis

/sɪs//səs/

Main definitions of sis in English

: sis1sis2SIS3

SIS3

abbreviation

  • (in the UK) Secret Intelligence Service.

    See MI6