15-Letter Words Matching __I_________S__

There are 31 15-letter words that match __I_________S__. 17 are common words, such as CHILDLESSNESSES and EPIDEMIOLOGISTS. A rarer one is WHIMSICALNESSES. In this set, S is the most frequent open letter (31 words). 21 words contain a doubled letter.

Full list 31

Common words

childlessnessesepidemiologistsexistentialismsexistentialistsfaithlessnessesfrightfulnessesfrivolousnessesguilelessnessesimitativenessesleisurelinessesnoiselessnessesphilanthropists
childlessnessesepidemiologistsexistentialismsexistentialistsfaithlessnessesfrightfulnessesfrivolousnessesguilelessnessesimitativenessesleisurelinessesnoiselessnessesphilanthropistspointlessnessesprimitivenessesshiftlessnessesutilitarianismsvoicelessnessesepistemologistsaminopeptidasesariboflavinosesariboflavinosischildlikenessesguiltlessnessesidiomaticnessesoxidoreductasespainterlinessesspinelessnessesspiritualnessesthinkablenessesuniversalnesseswhimsicalnesses

About this list

Words
31 (17 common words)
Common example
childlessnesses
Rare example
whimsicalnesses
Doubled letters
21
Ending in S
31
Most frequent letter
S (31)

Questions

How many 15-letter words matching __i_________s__ are there?

31. 17 of them are common words.

What is a common example?

CHILDLESSNESSES is among the common words in this set.