13-Letter Words Matching S____U_______

There are 17 13-letter words that match S____U_______. 7 are common words, such as SEMIAUTOMATIC and SERIOUSNESSES. A rarer one is STRENUOSITIES. In this set, S is the most frequent open letter (15 words). 10 words contain a doubled letter.

Full list 17

semiautomaticseriousnessesshipbuildingsskulduggeriessoulfulnessesstrenuousnesssumptuousnesssericulturistsinuousnessessternutationsstridulationssubequatorialsansculottishsansculottismsilhouettistssongfulnessesstrenuosities

About this list

Words
17 (7 common words)
Common example
semiautomatic
Rare example
strenuosities
Doubled letters
10
Ending in S
12
Most frequent letter
S (15)

Questions

How many 13-letter words matching s____u_______ are there?

17. 7 of them are common words.

What is a common example?

SEMIAUTOMATIC is among the common words in this set.