13-Letter Words Matching __I_______S__

There are 52 13-letter words that match __I_______S__. 15 are common words, such as BRITTLENESSES and FLIGHTINESSES. A rarer one is UNIVERSALISTS. In this set, S is the most frequent open letter (51 words). 27 words contain a doubled letter.

Full list 52

Common words

brittlenessesflightinessesflirtatiouslyheinousnessesominousnessespainfulnessesphilistinismspricklinessessaintlinessesseismologistsspiritualismsspiritualists
brittlenessesflightinessesflirtatiouslyheinousnessesominousnessespainfulnessesphilistinismspricklinessessaintlinessesseismologistsspiritualismsspiritualiststhirstinessestriceratopsesweightinessesamiablenessesapiculturistseditorialistsleishmaniasesleishmaniasisnoisomenessesprivatenessesspirochetosisuniformnessesuniversalismsanimatenessesanisotropismsaviculturistsdeinonychusesepicureanismsgainfulnessesgristlinessesinitialnessesjointednessesphillumenistsphilosophisedphilosophisespliablenessespointednessespsittacosisesruinousnessesspirochetosesstiltednessesswinishnessesswitchgrassestrichinosisestrichologiststricksinessestriumphalismstriumphalistsunitarianismsuniversalists

About this list

Words
52 (15 common words)
Common example
brittlenesses
Rare example
universalists
Doubled letters
27
Ending in S
50
Most frequent letter
S (51)

Questions

How many 13-letter words matching __i_______s__ are there?

52. 15 of them are common words.

What is a common example?

BRITTLENESSES is among the common words in this set.