13-Letter Words Start with 'sin'

There are 6 13-letter words that start with 'sin'.

sincerenesses	singularities
singularizing	sinlessnesses
sinterability	sinuousnesses

Note: These 6 13-letter words that start with 'sin' are found from the USA & Canada version of the tournament Scrabble word list.

Also see words start with sing, sinu, sinc, sino, sine, sini, sink, sinf, sint, sinl, sinn, sins, sina, sinh.

4-letter words start with 'sin' (5)
5-letter words start with 'sin' (8)
6-letter words start with 'sin' (12)
7-letter words start with 'sin' (20)
8-letter words start with 'sin' (25)
9-letter words start with 'sin' (30)
10-letter words start with 'sin' (18)
11-letter words start with 'sin' (14)
12-letter words start with 'sin' (8)
13-letter words start with 'sin' (6)
14-letter words start with 'sin' (1)
15-letter words start with 'sin' (1)