Word.ws English Dictionary

Plural of si

regular plural

The plural of si is sis.

Forms of si

Singularsi /siː/
Pluralsis /sɪs/
Countablecountable

Sis in a sentence

  • I sat down in the armchair, and my sis sat down on the floor.From the entry sit down
  • We're a place setting short, there'll be four of us - always supposing your sis really comes.From the entry suppose
  • As your big sis, I worry about your life too.From the entry as
  • I’ll kill anybody who touches my little sis.From the entry 'll
  • If your sis won’t be here on Thu, we’d better cancel the booking. — I will pray that she arrives on time.From the entry will

Meaning of si

  1. noun A syllable used in solfège to represent the seventh note of a major scale.

Full definition of si

Questions about the plural of si

What is the plural of si?
The plural of si is sis.
Is si countable?
Si is a countable noun.

Source and license

Adapted from Wiktionary: si (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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Cite this page: “Plural of si.” Word.ws, https://word.ws/plural/si. Based on Wiktionary, CC BY-SA 4.0.