15-Letter Words Matching __AT___________

There are 20 15-letter words that match __AT___________. 9 are common words, such as FEATHERBEDDINGS and FRATERNIZATIONS. A rarer one is QUATERCENTENARY. 9 words contain a doubled letter.

Full list 20

featherbeddingsfraternizationsinattentivenessloathsomenessesstatelessnessesweatherizationsweatherproofingweatherstrippedwhatchamacallitunattainabilityweatherboardingdeathlessnessesfeatherstitchedfeatherstitchesplatinocyanidesplatitudinarianplatitudinizingplatitudinouslyplatyhelminthicquatercentenary

About this list

Words
20 (9 common words)
Common example
featherbeddings
Rare example
quatercentenary
Doubled letters
9
Ending in S
9

Questions

How many 15-letter words matching __at___________ are there?

20. 9 of them are common words.

What is a common example?

FEATHERBEDDINGS is among the common words in this set.