14-Letter Words Starting With SI

There are 15 14-letter words that start with SI. 7 are common words, such as SIGNALIZATIONS and SIGNIFICATIONS. A rarer one is SINISTERNESSES. In this set, I is the most frequent open letter (13 words). 3 words contain a doubled letter.

Full list 15

signalizationssignificationssimplificationsimplisticallysimultaneitiessimultaneouslysisterlinessessilviculturistsimaroubaceoussinistralitiessignificanciessilicificationsilversmithingsimplemindedlysinisternesses

About this list

Words
15 (7 common words)
Common example
signalizations
Rare example
sinisternesses
Doubled letters
3
Ending in S
8
Most frequent letter
I (13)

Questions

How many 14-letter words starting with si are there?

15. 7 of them are common words.

What is a common example?

SIGNALIZATIONS is among the common words in this set.