15-Letter Words Containing UM

There are 57 15-letter words that contain UM. 18 are common words, such as ARGUMENTATIVELY and BUMPTIOUSNESSES. A rarer one is UNCIRCUMCISIONS. In this set, I is the most frequent open letter (54 words). 7 words contain a doubled letter.

Full list 57

Common words

argumentativelybumptiousnessescircumferentialcircumlocutionscircumnavigatedcircumnavigatescircumscriptioncircumspectionsdehumanizationsdisequilibriumshumanitarianismhumidifications
argumentativelybumptiousnessescircumferentialcircumlocutionscircumnavigatedcircumnavigatescircumscriptioncircumspectionsdehumanizationsdisequilibriumshumanitarianismhumidificationshumorlessnessesinstrumentalistinstrumentalityinstrumentationsumptuousnessessupernumerariesbioluminescencecircumambulatedcircumambulatescircumstantiatecircumvallatingcircumvolutionscounterargumentinstrumentalismmicrosporangiummonumentalizingpleuropneumoniaplumbaginaceouspneumonectomiesrumbustiousnesstransilluminatealuminosilicatearchaebacteriumbituminizationschondrocraniumscircumambientlycircumnavigatorcircumvallationcorynebacteriumdocumentationalenterobacteriumenumerabilitiesmonumentalitiesnonconsumptionsnonequilibriumsnoninstrumentaloverconsumptionoverdocumentingradiostrontiumsrheumatologistsrumormongeringssemidocumentarysuperhumanitiestraumatizationsuncircumcisions

About this list

Words
57 (18 common words)
Common example
argumentatively
Rare example
uncircumcisions
Doubled letters
7
Ending in S
27
Most frequent letter
I (54)

Questions

How many 15-letter words containing um are there?

57. 18 of them are common words.

What is a common example?

ARGUMENTATIVELY is among the common words in this set.