12-Letter Words Matching ____T___O___

There are 66 12-letter words that match ____T___O___. 16 are common words, such as CHATTERBOXES and COUNTERFOILS. A rarer one is ZWITTERIONIC. In this set, R is the most frequent open letter (51 words). 10 words contain a doubled letter.

Full list 66

Common words

chatterboxescounterfoilscounterpointcounterpoisecountrywomancountrywomenhearthstoneshypothyroidsinvitationalparathyroidsparatyphoidsplasterboard
chatterboxescounterfoilscounterpointcounterpoisecountrywomancountrywomenhearthstoneshypothyroidsinvitationalparathyroidsparatyphoidsplasterboardpractitionershuttlecockstheatergoersthistledownsadaptationalantitakeovercounterforcecountermovescraftspeopledenotationalelectromotorelectrotonusenantiomorphescutcheonedflittermouseflutterboardgametophoresmeditationalornithologicproctoscopessalutationalscratchboardsportspeopletrestleworksvegetationalvisitationalblastosporescountercoupscountermovedcounterposedcounterposescounterpowercounterworldcrystalloidsdiastereomerdilatationaldiphtheroidselectroformselectrotonicirrotationalkinetochoreskinetoscopeslevitationallimitationalplasterworksrepetitionalreputationalscattergoodsshittimwoodssomatotropinspatterdockstheatergoingunorthodoxlyzwitterionic

About this list

Words
66 (16 common words)
Common example
chatterboxes
Rare example
zwitterionic
Doubled letters
10
Ending in S
26
Most frequent letter
R (51)

Questions

How many 12-letter words matching ____t___o___ are there?

66. 16 of them are common words.

What is a common example?

CHATTERBOXES is among the common words in this set.