13-Letter Words Matching I_____O______

There are 80 13-letter words that match I_____O______. 34 are common words, such as ICHTHYOLOGIES and ICHTHYOLOGIST. A rarer one is ISOCHRONOUSLY. In this set, N is the most frequent open letter (74 words). 33 words contain a doubled letter.

Full list 80

Common words

ichthyologiesichthyologistimperiousnessimpersonatingimpersonationimpersonatorsimpetuositiesimpetuousnessimprisonmentsinappropriateincorporatingincorporation
ichthyologiesichthyologistimperiousnessimpersonatingimpersonationimpersonatorsimpetuositiesimpetuousnessimprisonmentsinappropriateincorporatingincorporationindispositioninferioritiesingeniousnessingenuousnessinnocuousnessinsidiousnessinsupportableinterconnectsinterlocutorsinterlocutoryinterpolatinginterpolationinterpositioninterrogatinginterrogationinterrogativeinterrogatorsinterrogatoryinvidiousnessirrationalityirresponsibleirresponsiblyichthyosaurusillusionisticimpersonalityimpersonalizeinclinometersincorporativeincorporeallyinjuriousnessinsupportablyinteriorizinginterlocutioninterlocutrixinterpolativeirrationalizeisodimorphismichthyofaunaeichthyofaunalichthyofaunasincommoditiesinconsonancesincorporatorsincuriositiesincuriousnessindissociableindissociablyinterboroughsintercolonialintercommunalintercomparedintercomparesinterconvertsintercorticalinterdominioninteriorisinginterioritiesintermountaininterpolatorsinterrogateesintersocietalinterworkingsinventoriallyirrationalismirrationalistisoalloxazineisochromosomeisochronously

About this list

Words
80 (34 common words)
Common example
ichthyologies
Rare example
isochronously
Doubled letters
33
Ending in S
31
Most frequent letter
N (74)

Questions

How many 13-letter words matching i_____o______ are there?

80. 34 of them are common words.

What is a common example?

ICHTHYOLOGIES is among the common words in this set.