13-Letter Words Containing UMS

There are 16 13-letter words that contain UMS. 7 are common words, such as CIRCUMSCRIBED and CIRCUMSCRIBES. A rarer one is SUPERPREMIUMS. In this set, I is the most frequent open letter (15 words). 4 words contain a doubled letter.

Full list 16

circumscribedcircumscribescircumspectlycircumstancedcircumstancespraseodymiumsprotactiniumscircumscriberunnilpentiumsunnilquadiumscircumstellarepithalamiumsnonpetroleumsquinquenniumsradiothoriumssuperpremiums

About this list

Words
16 (7 common words)
Common example
circumscribed
Rare example
superpremiums
Doubled letters
4
Ending in S
11
Most frequent letter
I (15)

Questions

How many 13-letter words containing ums are there?

16. 7 of them are common words.

What is a common example?

CIRCUMSCRIBED is among the common words in this set.