15-Letter Words Matching ____________EN_

There are 30 15-letter words that match ____________EN_. 11 are common words, such as ACKNOWLEDGEMENT and DISENTANGLEMENT. A rarer one is ULTRACONVENIENT. 6 words contain a doubled letter.

Full list 30

Common words

acknowledgementdisentanglementdisillusionmentenfranchisementimmunodeficientmicromanagementreapportionmentreestablishmentsemitransparenttrinitrotolueneunderemploymentcounterargument
acknowledgementdisentanglementdisillusionmentenfranchisementimmunodeficientmicromanagementreapportionmentreestablishmentsemitransparenttrinitrotolueneunderemploymentcounterargumenthexachloropheneoverachievementoverdevelopmenttrinitrobenzeneunderinvestmentanticarcinogensantidevelopmentcountermovementdichlorobenzeneeclaircissementencephalitogenshyperexcitementimmunocompetentprecipitinogenssemitranslucentsuperconvenientsupergovernmentultraconvenient

About this list

Words
30 (11 common words)
Common example
acknowledgement
Rare example
ultraconvenient
Doubled letters
6
Ending in S
3

Questions

How many 15-letter words matching ____________en_ are there?

30. 11 of them are common words.

What is a common example?

ACKNOWLEDGEMENT is among the common words in this set.