9-Letter Words Matching ____U___L

There are 20 9-letter words that match ____U___L. 7 are common words, such as CIRCUITAL and CONNUBIAL. A rarer one is OVIDUCTAL. In this set, A is the most frequent open letter (18 words). 6 words contain a doubled letter.

Full list 20

circuitalconnubialdisbursalmarsupialmercurialnocturnalteacupfulazimuthalbecquerelcenturialcommutualeffluvialpertussalpreludialpreputialrecountalsuccursalcocounselcolluvialoviductal

About this list

Words
20 (7 common words)
Common example
circuital
Rare example
oviductal
Doubled letters
6
Ending in S
0
Most frequent letter
A (18)

Questions

How many 9-letter words matching ____u___l are there?

20. 7 of them are common words.

What is a common example?

CIRCUITAL is among the common words in this set.