15-Letter Words Matching ___E_I_________

There are 49 15-letter words that match ___E_I_________. 15 are common words, such as EGREGIOUSNESSES and EXPEDITIOUSNESS. A rarer one is UNSERIOUSNESSES. In this set, N is the most frequent open letter (45 words). 16 words contain a doubled letter.

Full list 49

Common words

egregiousnessesexpeditiousnessexperimentationfacetiousnessesforesightednessimmediatenessesimperiousnessesingeniousnessesmaterializationrepetitiousnesssuperimpositionsuperintendence
egregiousnessesexpeditiousnessexperimentationfacetiousnessesforesightednessimmediatenessesimperiousnessesingeniousnessesmaterializationrepetitiousnesssuperimpositionsuperintendencesuperintendencysuperintendentsunreliabilitiesexperientialismexperimentalismexperimentalistexperimentalizehereditarianismimperishabilityirreligiousnessirresistibilitynorepinephrinessuperindividualunderinvestmentarteriographiesdefeminizationsdelegitimationsesterificationsexteriorizationhyperimmunizinghyperinflationshyperinsulinismhyperinvolutionindefinablenessinheritablenessinterindividualinterinfluencedinterinfluencesinteriorizationremediabilitiesreregistrationssuperinductionssuperinfectionstelekineticallyunderinflationsundesirablenessunseriousnesses

About this list

Words
49 (15 common words)
Common example
egregiousnesses
Rare example
unseriousnesses
Doubled letters
16
Ending in S
27
Most frequent letter
N (45)

Questions

How many 15-letter words matching ___e_i_________ are there?

49. 15 of them are common words.

What is a common example?

EGREGIOUSNESSES is among the common words in this set.