12-Letter Words Matching ______U__N__

There are 16 12-letter words that match ______U__N__. 3 are common words, such as LONGITUDINAL and TRANSLUCENCE. A rarer one is TRANSHUMANTS. In this set, A is the most frequent open letter (14 words). 3 words contain a doubled letter.

Full list 16

longitudinaltranslucencetranslucencynonoccurencepreoccupancysubdebutantesuperhumanlytranshumancematriculantsmotoneuronalnonargumentsnoninsuranceoffscouringsplatitudinalradiolucencytranshumants

About this list

Words
16 (3 common words)
Common example
longitudinal
Rare example
transhumants
Doubled letters
3
Ending in S
4
Most frequent letter
A (14)

Questions

How many 12-letter words matching ______u__n__ are there?

16. 3 of them are common words.

What is a common example?

LONGITUDINAL is among the common words in this set.