15-Letter Words Matching ________I___S__

There are 71 15-letter words that match ________I___S__. 30 are common words, such as AIRWORTHINESSES and ANTIQUARIANISMS. A rarer one is VOLUNTARINESSES. In this set, S is the most frequent open letter (68 words). 36 words contain a doubled letter.

Full list 71

Common words

airworthinessesantiquarianismsarbitrarinessesbrotherlinessesdastardlinessesegalitarianismsexistentialismsexistentialistsfoolhardinessesleisurelinessesmomentarinessesneocolonialisms
airworthinessesantiquarianismsarbitrarinessesbrotherlinessesdastardlinessesegalitarianismsexistentialismsexistentialistsfoolhardinessesleisurelinessesmomentarinessesneocolonialismsneocolonialistsniggardlinessesobstructionismsobstructionistspaterfamiliasesprohibitionistspusillanimouslyseaworthinessessegregationistssprightlinessestemporarinessesuncleanlinessesunearthlinessesunhealthinessesunsightlinessesunworldlinessesutilitarianismsvivisectionistsabstractionismsabstractionistsassociationismselectrodialysislibertarianismsmillenarianismsmillionairessesmultitudinouslyserendipitouslyadversarinessesassociationistscomradelinessescooperationistscrotchetinessescustomarinessesdestructionistsdesultorinesseselectrodialysesendometriosisesexemplarinessesimaginarinessesintegrationistsmaterfamiliasesmercenarinessesmetafictionistsmultiracialismspainterlinessesphotoperiodismsplatitudinouslyprerevisionistsproletarianisedproletarianisesrepudiationistsreservationistsrestrictionismsrestrictionistssecondarinessesterritorialismsterritorialistsvisionarinessesvoluntarinesses

About this list

Words
71 (30 common words)
Common example
airworthinesses
Rare example
voluntarinesses
Doubled letters
36
Ending in S
66
Most frequent letter
S (68)

Questions

How many 15-letter words matching ________i___s__ are there?

71. 30 of them are common words.

What is a common example?

AIRWORTHINESSES is among the common words in this set.