12-Letter Words Matching _____C____U_

There are 14 12-letter words that match _____C____U_. 3 are common words, such as PROTACTINIUM and SUPERCILIOUS. A rarer one is ULTRACAREFUL. In this set, O is the most frequent open letter (11 words). 2 words contain a doubled letter.

Full list 14

protactiniumsuperciliousunsuccessfulamphicoelousandrocliniumbombacaceouscharacterfulcirrocumulushectocotylusmatroclinousrhizocarpoussmilacaceousstyracaceousultracareful

About this list

Words
14 (3 common words)
Common example
protactinium
Rare example
ultracareful
Doubled letters
2
Ending in S
9
Most frequent letter
O (11)

Questions

How many 12-letter words matching _____c____u_ are there?

14. 3 of them are common words.

What is a common example?

PROTACTINIUM is among the common words in this set.