sis
see also: SIS
Pronunciation Noun

sis (plural sises)

  1. (informal) Clipping of sister#English|sister.
Synonyms Translations
SIS
Proper noun
  1. (British) Initialism of Secret Intelligence Service
  2. Initialism of Schengen Information System
Synonyms
  • MI6, Six, 6
  • Secret Intelligence Service
Noun

sis (uncountable)

  1. Initialism of second impact syndrome
  2. Initialism of snow immersion suffocation



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