12-Letter Words Matching _____TR_____

There are 119 12-letter words that match _____TR_____. 48 are common words, such as ANCESTRESSES and BACKSTROKING. A rarer one is UNGENTRIFIED. In this set, I is the most frequent open letter (98 words). 33 words contain a doubled letter.

Full list 119

Common words

ancestressesbackstrokingbelletristicbootstrappedcatastrophescatastrophicdecentralizedecontrolleddisastrouslyeccentricityequestriennefenestration
ancestressesbackstrokingbelletristicbootstrappedcatastrophescatastrophicdecentralizedecontrolleddisastrouslyeccentricityequestriennefenestrationglobetrotteridolatressesillustratingillustrationillustrativeillustratorsindoctrinateindustriallyinfiltratinginfiltrationinfiltratorsmagistraciesmainstreamedmalnutritionministrationmousetrappedobstetricianpediatricianperestroikasperpetratingperpetrationperpetratorsredistributeredistrictedregistrationsculptressesseamstressesseductressessempstressessidestrokingsongstressesuncontrolleduninstructedunobstructedunrestrainedunrestrictedamphitropousanisotropiesantistropheschemotropismchymotrypsingeometriciangeriatricianheliotropismhorsetradinghydrotropismhypertrophicidolatrouslyisometropiasmethotrexateministrativemisattributeorthotropousoverstrainedoverstressedoverstressespedestrianlyphototropismpipistrellespralltrillerprototrophicsinistralitysymmetrizingundistressedunrestraintsaccoutrementanisotropismantistrophicbiometricianchymotrypticcloistressescompatrioticdirectressesgeometrisinggeometrizinginfiltrativeinventressesleukotrieneslithotripterlithotriptorluteotrophicluteotrophinluteotropinsmagistraturemultitrackednonintrusivenonnutritivenonpetroleumoligotrophicoutintriguedoutintriguesoverstrewingoverstriddenoverstridingoverstrikingpleiotropiesradiotracersrecentrifugeslipstreamedthixotropiesthyrotrophicthyrotrophinthyrotropinstrimetrogonsuncontractedundistractedungentrified

About this list

Words
119 (48 common words)
Common example
ancestresses
Rare example
ungentrified
Doubled letters
33
Ending in S
32
Most frequent letter
I (98)

Questions

How many 12-letter words matching _____tr_____ are there?

119. 48 of them are common words.

What is a common example?

ANCESTRESSES is among the common words in this set.