15-Letter Words Matching D_____R________

There are 18 15-letter words that match D_____R________. 7 are common words, such as DAGUERREOTYPING and DEPOLARIZATIONS. A rarer one is DISAGGREGATIONS. In this set, I is the most frequent open letter (18 words). 6 words contain a doubled letter.

Full list 18

daguerreotypingdepolarizationsdisapprobationsdiscouragementsdisenfranchiseddisenfranchisesdishearteninglydeleteriousnessdematerializingdisheartenmentsdaguerreotypiesdaguerreotypistdechlorinationsdecolorizationsdiastereoisomerdichlorobenzenedichloroethanesdisaggregations

About this list

Words
18 (7 common words)
Common example
daguerreotyping
Rare example
disaggregations
Doubled letters
6
Ending in S
11
Most frequent letter
I (18)

Questions

How many 15-letter words matching d_____r________ are there?

18. 7 of them are common words.

What is a common example?

DAGUERREOTYPING is among the common words in this set.