13-Letter Words Matching D_L__________

There are 20 13-letter words that match D_L__________. 11 are common words, such as DELIBERATIONS and DELICATESSENS. A rarer one is DOLPHINFISHES. In this set, I is the most frequent open letter (19 words). 9 words contain a doubled letter.

Full list 20

deliberationsdelicatessensdeliciousnessdelimitationsdelinquenciesdeliriousnessdilapidationsdilettantismsdillydallyingdolefulnessesdoltishnessesdelectabilitydeleteriouslydelightednessdeliquescencedulcificationdelaminationsdilatometriesdollishnessesdolphinfishes

About this list

Words
20 (11 common words)
Common example
deliberations
Rare example
dolphinfishes
Doubled letters
9
Ending in S
15
Most frequent letter
I (19)

Questions

How many 13-letter words matching d_l__________ are there?

20. 11 of them are common words.

What is a common example?

DELIBERATIONS is among the common words in this set.