13-Letter Words Containing SUM

There are 15 13-letter words that contain SUM. 3 are common words, such as CONSUMMATIONS and SUMPTUOUSNESS. A rarer one is SUMMERSAULTED. In this set, T is the most frequent open letter (13 words). 9 words contain a doubled letter.

Full list 15

consummationssumptuousnessunconsummatedconsumeristicconsumptivelypresumptivelysummarizationanticonsumersconsumershipsmisassumptionodontoglossumoverconsumingreassumptionssummabilitiessummersaulted

About this list

Words
15 (3 common words)
Common example
consummations
Rare example
summersaulted
Doubled letters
9
Ending in S
6
Most frequent letter
T (13)

Questions

How many 13-letter words containing sum are there?

15. 3 of them are common words.

What is a common example?

CONSUMMATIONS is among the common words in this set.