13-Letter Words Matching ___I_N_______

There are 21 13-letter words that match ___I_N_______. 9 are common words, such as ANCIENTNESSES and COSIGNATORIES. A rarer one is VALIANTNESSES. In this set, A is the most frequent open letter (21 words). 4 words contain a doubled letter.

Full list 21

ancientnessescosignatoriesinsignificantnationalisticnationalitiesnationalizingrationalisticrationalitiesrationalizingassignabilityvisionarinessnationalisingnationalizersnotionalitiesoptionalitiesradionuclidesrationalisingrationalizersregionalisticregionalizingvaliantnesses

About this list

Words
21 (9 common words)
Common example
ancientnesses
Rare example
valiantnesses
Doubled letters
4
Ending in S
11
Most frequent letter
A (21)

Questions

How many 13-letter words matching ___i_n_______ are there?

21. 9 of them are common words.

What is a common example?

ANCIENTNESSES is among the common words in this set.