15-Letter Words Matching _____IO________

There are 64 15-letter words that match _____IO________. 39 are common words, such as AMBITIOUSNESSES and ATROCIOUSNESSES. A rarer one is VEXATIOUSNESSES. 47 words contain a doubled letter.

Full list 64

Common words

ambitiousnessesatrociousnessesaudaciousnessesautobiographersautobiographiesbumptiousnessescapaciousnessesconsciousnessesdeliciousnessesdeliriousnessesdenationalizingegregiousnesses
ambitiousnessesatrociousnessesaudaciousnessesautobiographersautobiographiesbumptiousnessescapaciousnessesconsciousnessesdeliciousnessesdeliriousnessesdenationalizingegregiousnessesfacetiousnessesferociousnessesfractiousnesseshilariousnessesimperiousnessesingeniousnessesinsidiousnessesinvidiousnessesirrationalitiesjudiciousnesseslaboriousnesseslitigiousnessesluxuriousnessesmaliciousnessesmelodiousnessesnefariousnessesobliviousnessesobnoxiousnessesofficiousnessespenuriousnessesrapaciousnessesreligiousnessessalaciousnessestenaciousnessesvicariousnessesvivaciousnessesvoraciousnessesfugaciousnessesfunctionalitiesinjuriousnessesproprioceptionsquestionabilityarteriographiesbasidiomycetousenantiomorphismenantiomorphousexteriorizationfeloniousnessesfractionalizingfunctionalisticgrandiosenessesincuriousnessesinteriorizationirrationalisticphotoionizationreactionaryismsrenationalizingsagaciousnessesseditiousnessesunseriousnessesveraciousnessesvexatiousnesses

About this list

Words
64 (39 common words)
Common example
ambitiousnesses
Rare example
vexatiousnesses
Doubled letters
47
Ending in S
54

Questions

How many 15-letter words matching _____io________ are there?

64. 39 of them are common words.

What is a common example?

AMBITIOUSNESSES is among the common words in this set.