13-Letter Words Matching __LU_________

There are 22 13-letter words that match __LU_________. 7 are common words, such as CALUMNIATIONS and ILLUMINATIONS. A rarer one is VOLUNTARYISTS. In this set, I is the most frequent open letter (20 words). 12 words contain a doubled letter.

Full list 22

calumniationsilluminationsillustrationsillustriouslysalutatoriansunluckinessesvolunteerismscolumelliformcolumniationsilluminometerillusionisticreluctivitiesvoluntarinessvoluntaristicailurophobiasrelubricatingrelubricationvaluationallyvaluelessnessvolublenessesvoluntaryismsvoluntaryists

About this list

Words
22 (7 common words)
Common example
calumniations
Rare example
voluntaryists
Doubled letters
12
Ending in S
14
Most frequent letter
I (20)

Questions

How many 13-letter words matching __lu_________ are there?

22. 7 of them are common words.

What is a common example?

CALUMNIATIONS is among the common words in this set.