Solresol · 28 September 2026

A word a day week

si

SI · one spoken or sung note · 7

  • yes
  • willingly

At the top of the seven-note ladder, si is assent: yes, agreed, willingly.

Seven-note spelling

Say it, play it, flash it

  1. si7 · violet
Treble-clef notation for si si
On a modern treble clef, using C4 through B4.

The seventh one-note word answers yes and can also carry the sense willingly or agreed.

Gajewski’s grammar also shows a three-line staff and a special shorthand. Here, the notes appear on a modern treble clef. The C-major pitches are a playback choice; Solresol does not require absolute pitch.

Tiny sentence

Si!

yes

“Yes!”

A complete one-word utterance. English-language solfège often calls the seventh note ti; historical Solresol uses si.

Treble-clef notation for si si
On a modern treble clef, using C4 through B4.

There is a short pause between words. The C-major pitches are a playback choice.

Receipts

Sources and cautions

The historical grammar and Sudre-derived dictionary use si, not the later English solfège label ti.