How many words start with SI?

941, ranging from 2 to 15 letters.

What is the best scoring word that starts with SI?

SIZZLING, worth 27 points in Scrabble.

SILVERSMITHINGS and SIMPLIFICATIONS, at 15 letters.

941 words begin with SI, and SIZZLING scores the most at 27 points.

Showing the highest-scoring of 941 words. The pages linked below split the rest into smaller lists.

The dictionary contains 941 words that begin with SI — set out here by length.

Lengths span 2 to 15. The middle of that range is where the words are: 167 of them are 8 letters long.

If you are playing for score, SIZZLING at 27 points is the pick. Words With Friends scores it differently and prefers SILVICULTURALLY at 30.

The full 15 letters are used by SILVERSMITHINGS, SIMPLIFICATIONS and SIGMOIDOSCOPIES.

If you need a narrower cut, the pages linked below split this set by letter and by length.

sidesplittingly: in a very humorous manner
simplification: the act of reducing complexity
simultaneously: at the same instant
sigmoidoscopy: visual examination (with a sigmoidoscope) of the lower third of the colon in a search for polyps
signalization: a conspicuous indication

How many words start with SI?: 941, ranging from 2 to 15 letters.
What is the best scoring word that starts with SI?: SIZZLING, worth 27 points in Scrabble.
What is the longest word that starts with SI?: SILVERSMITHINGS and SIMPLIFICATIONS, at 15 letters.