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12-Letter Words Starting With SI

  • 74 words
  • All English dictionaries
  • Scrabble points
Dictionary

Popular 12-Letter Words Starting With SI

The most familiar words on this list, with their Scrabble scores.

All 12-Letter Words Starting With SI 74 words

How common is SI at the start of twelve-letter words?

Our combined English word list has 74 twelve-letter words that start with SI. They average 16.9 points, the best is SIGNIFICANCY (23 points) and 59.5% end in S.

Total words
74
Average Scrabble score
16.9
out of 23 max
Everyday words
10%
common in ordinary English
Most common ending
S
59.5% of words

Most common last letters

  • s 59.5%
  • y 12.2%
  • e 8.1%

Top vowel pairs

  • ia10.8%
  • ou9.5%
  • ie5.4%

Share of words where these two vowels sit side by side.

Rare words worth knowing

Valid in this dictionary but rarely seen in everyday English.

Highest-scoring twelve-letter word that starts with SI

s 1i 1g 2n 1i 1f 4i 1c 3a 1n 1c 3y 4

S 1 + I 1 + G 2 + N 1 + I 1 + F 4 + I 1 + C 3 + A 1 + N 1 + C 3 + Y 4 = 23 points

Double word
46 pts
Triple word
69 pts

Face value of the tiles, then the whole word on a double- or triple-word square (letter bonuses and bingos not included).

significancy

No dictionary definition on file. This is a valid game word that standard dictionaries rarely cover.

  • Scrabble US
  • Scrabble UK
  • Words With Friends

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12-Letter Words Starting With SI by the numbers

12-Letter Words Starting With SI FAQ

How many twelve-letter words that start with SI are there?

There are 74 twelve-letter words that start with SI in our combined English word list. Other dictionaries give different totals, so switch dictionary at the top of the list to compare.

What is the highest-scoring twelve-letter word that starts with SI?

SIGNIFICANCY is worth 23 points in Scrabble before any bonus squares. Other strong options are SILIQUACEOUS (23), SINGULARIZED (23), SIZEABLENESS (23).

What are some common twelve-letter words that start with SI?

Everyday examples include SIGNIFICANCE, SIMULTANEOUS, SIMILARITIES, SILVERSMITHS, SIDETRACKING, SILHOUETTING, SIDESTEPPING, SILVERFISHES. Sort the list by "Most common" to see the familiar words first.

Which rare twelve-letter words that start with SI score well?

Uncommon but valid choices include SILIQUACEOUS (23), SINGULARIZED (23), SIZEABLENESS (23), SINGULARIZES (22). Few players know them, so they can catch an opponent off guard.