15-Letter Words Start with 'sig'

There are 2 15-letter words that start with 'sig'.

sightlessnesses	sigmoidoscopies

Note: These 2 15-letter words that start with 'sig' are found from the USA & Canada version of the tournament Scrabble word list.

Also see words start with sign, sigh, sigm, sigl, siga, sigi.

4-letter words start with 'sig' (2)
5-letter words start with 'sig' (7)
6-letter words start with 'sig' (14)
7-letter words start with 'sig' (21)
8-letter words start with 'sig' (18)
9-letter words start with 'sig' (28)
10-letter words start with 'sig' (18)
11-letter words start with 'sig' (11)
12-letter words start with 'sig' (2)
13-letter words start with 'sig' (8)
14-letter words start with 'sig' (3)
15-letter words start with 'sig' (2)