12-Letter Words Containing IOU

There are 100 12-letter words that contain IOU. 68 are common words, such as ABSTEMIOUSLY and ADVENTITIOUS. A rarer one is UNFASTIDIOUS. In this set, S is the most frequent open letter (100 words). 22 words contain a doubled letter.

Full list 100

Common words

abstemiouslyadventitiousamphibiouslyauspiciouslyavariciouslycapriciouslycaptiousnesscautiousnesscensoriouslycommodiouslycontagiouslycontumacious
abstemiouslyadventitiousamphibiouslyauspiciouslyavariciouslycapriciouslycaptiousnesscautiousnesscensoriouslycommodiouslycontagiouslycontumaciouscontumeliousdisputatiouseuphoniouslyfallaciouslyfastidiouslyfictitiouslygraciousnessgregariouslyharmoniouslyimperviouslyinauspiciousincommodiousinfectiouslyingloriouslyinharmoniousinsalubriouslasciviouslylicentiouslylugubriouslylusciousnessmendaciouslymeretriciousmultifariousmysteriouslynonreligiousnutritiouslyobsequiouslyodiousnessesostentatiousovercautiousparsimoniousperfidiouslyperniciouslypertinaciousprecariouslypreciousnessprecociouslyprodigiouslypropitiouslypugnaciouslyrambunctiousrebelliouslysacrilegioussemipreciousspaciousnessspeciousnessspuriousnessstudiousnesssubconscioussupercilioussuspiciouslyungraciouslyunpropitiousuproariouslyvaingloriousvictoriouslyadscititiouscalumniouslycompunctiousfactiousnessfactitiouslyflagitiouslygloriousnessincautiouslyloquaciouslylubriciouslymordaciouslynonmaliciousperjuriouslyperviousnesspreconscioussalubriouslysequaciouslysuppositiousunsuspicioususuriousnessuxoriousnessautoeciouslycementitioushellaciouslyheteroecioushomoiousiansnonconsciouspreviousnessrobustiouslyultraseriousuncensoriousunfastidious

About this list

Words
100 (68 common words)
Common example
abstemiously
Rare example
unfastidious
Doubled letters
22
Ending in S
51
Most frequent letter
S (100)

Questions

How many 12-letter words containing iou are there?

100. 68 of them are common words.

What is a common example?

ABSTEMIOUSLY is among the common words in this set.