13-Letter Words Start with 'sum'

There are 5 13-letter words that start with 'sum'.

summabilities	summarization
summersaulted	summersetting
sumptuousness

Note: These 5 13-letter words that start with 'sum' are found from the USA & Canada version of the tournament Scrabble word list.

Also see words start with summ, sump, suma, sumo, suml, sums.

4-letter words start with 'sum' (3)
5-letter words start with 'sum' (4)
6-letter words start with 'sum' (8)
7-letter words start with 'sum' (12)
8-letter words start with 'sum' (14)
9-letter words start with 'sum' (20)
10-letter words start with 'sum' (17)
11-letter words start with 'sum' (10)
12-letter words start with 'sum' (4)
13-letter words start with 'sum' (5)
14-letter words start with 'sum' (2)
15-letter words start with 'sum' (1)