13-Letter Words Starting With SI

Found 25 13-letter words starting with SI

Highest Scrabble Score

The highest scoring 13-letter word starting with SI in Scrabble:

SIGMOIDOSCOPY24 pts
Highest Words With Friends Score

The highest scoring 13-letter word starting with SI in WWF:

SINGULARIZING30 pts

About 13-Letter Words Starting With SI

This list contains valid 13-letter words that begin with SI. Longer words score higher in Scrabble due to premium tiles and the 50-point bingo bonus. Each word links to its definition page with anagrams and game scores.