9-Letter Words Matching I_____O__

There are 83 9-letter words that match I_____O__. 35 are common words, such as IGNITIONS and ILLUSIONS. A rarer one is ISOGAMOUS. In this set, N is the most frequent open letter (63 words). 11 words contain a doubled letter.

Full list 83

Common words

ignitionsillusionsimitatorsimperiousimpetuousimpostorsimprisonsinactionsincisionsincommodeincuriousinferiors
ignitionsillusionsimitatorsimperiousimpetuousimpostorsimprisonsinactionsincisionsincommodeincuriousinferiorsinfusionsingeniousingenuousinglenookinjectorsinjuriousinnermostinnersoleinnocuousinsidiousintercomsinteriorsinterlockinterlopeinterposeinterwoveinvasionsinventorsinventoryinvestorsinvidiousironstoneironwoodsiteratorsichnologyichthyoidiconologyideationsidiophoneileostomyillationsimidazoleincensoryindisposeinductorsinflatorsinnoxiousinodorousinositolsinterjoininternodeinterworkiridotomyirriguousisolatorsisologousisomerousidolatorsignitronsimpactorsimpastoedimpellorsinceptorsindentorsindictorsindorsorsinfectorsinfixionsinharmonyinhesionsinterfoldintermontinterzoneinvertorsiodationsiodophorsionophoreiridologyisochroneisochronsisogamous

About this list

Words
83 (35 common words)
Common example
ignitions
Rare example
isogamous
Doubled letters
11
Ending in S
53
Most frequent letter
N (63)

Questions

How many 9-letter words matching i_____o__ are there?

83. 35 of them are common words.

What is a common example?

IGNITIONS is among the common words in this set.