13-Letter Words Matching ______U_L____

There are 13 13-letter words that match ______U_L____. 3 are common words, such as BILINGUALISMS and SPIRITUALISMS. A rarer one is SPIRITUALNESS. In this set, A is the most frequent open letter (12 words). 3 words contain a doubled letter.

Full list 13

bilingualismsspiritualismsspiritualistseffectualnessmethaqualonesspiritualizedspiritualizesspiritualtiesmultibuildingmultinucleateradionuclidesrevictuallingspiritualness

About this list

Words
13 (3 common words)
Common example
bilingualisms
Rare example
spiritualness
Doubled letters
3
Ending in S
9
Most frequent letter
A (12)

Questions

How many 13-letter words matching ______u_l____ are there?

13. 3 of them are common words.

What is a common example?

BILINGUALISMS is among the common words in this set.