14-Letter Words Matching _UM___________

There are 18 14-letter words that match _UM___________. 5 are common words, such as CUMBERSOMENESS and CUMULONIMBUSES. A rarer one is TUMORIGENICITY. In this set, N is the most frequent open letter (18 words). 13 words contain a doubled letter.

Full list 18

cumbersomenesscumulonimbuseshumidificationhumorousnessesmummificationscumulativenesshumanisticallyluminousnessesnumerousnessessummarizationstumultuousnesscumbrousnessesdumbfounderingnuminousnessesnumismaticallyrumormongeringsummersaultingtumorigenicity

About this list

Words
18 (5 common words)
Common example
cumbersomeness
Rare example
tumorigenicity
Doubled letters
13
Ending in S
11
Most frequent letter
N (18)

Questions

How many 14-letter words matching _um___________ are there?

18. 5 of them are common words.

What is a common example?

CUMBERSOMENESS is among the common words in this set.