13-Letter Words Matching _UM__________

There are 23 13-letter words that match _UM__________. 10 are common words, such as BUMPTIOUSNESS and HUMANITARIANS. A rarer one is TUMORIGENESIS. In this set, S is the most frequent open letter (19 words). 8 words contain a doubled letter.

Full list 23

bumptiousnesshumanitarianshumanizationshumiliatinglyhumorlessnessluminescencesmummificationnumerologistspumpernickelssumptuousnesscumulostratusnumerologicalnumismatologyrumbustiouslysummarizationdumbfoundereddumortieriteshumificationslumpishnessessummabilitiessummersaultedtumorigenesestumorigenesis

About this list

Words
23 (10 common words)
Common example
bumptiousness
Rare example
tumorigenesis
Doubled letters
8
Ending in S
15
Most frequent letter
S (19)

Questions

How many 13-letter words matching _um__________ are there?

23. 10 of them are common words.

What is a common example?

BUMPTIOUSNESS is among the common words in this set.