15-Letter Words Matching ______R___L____

There are 12 15-letter words that match ______R___L____. 2 are common words, such as TRINITROTOLUENE and UNDERPRIVILEGED. A rarer one is THERMOREGULATOR. In this set, E is the most frequent open letter (12 words). 3 words contain a doubled letter.

Full list 12

trinitrotolueneunderprivilegedallegoricalnesscountercyclicalcounterrallyingcounterviolencenonmatriculatednonmetropolitansymmetricalnessthermoregulatedthermoregulatesthermoregulator

About this list

Words
12 (2 common words)
Common example
trinitrotoluene
Rare example
thermoregulator
Doubled letters
3
Ending in S
3
Most frequent letter
E (12)

Questions

How many 15-letter words matching ______r___l____ are there?

12. 2 of them are common words.

What is a common example?

TRINITROTOLUENE is among the common words in this set.