13-Letter Words Matching __I_____S____

There are 18 13-letter words that match __I_____S____. 12 are common words, such as BRINKMANSHIPS and CHILDLESSNESS. A rarer one is TRICHINOSISES. 14 words contain a doubled letter.

Full list 18

brinkmanshipschildlessnesscrisscrossingfaithlessnessfrivolousnessguilelessnesshairdressingsnoiselessnesspointlessnessshiftlessnessuninterestingvoicelessnessrhinoplastiesspinelessnessguiltlessnesspsittacosisesreimpressionstrichinosises

About this list

Words
18 (12 common words)
Common example
brinkmanships
Rare example
trichinosises
Doubled letters
14
Ending in S
16

Questions

How many 13-letter words matching __i_____s____ are there?

18. 12 of them are common words.

What is a common example?

BRINKMANSHIPS is among the common words in this set.