13-Letter Words Matching __C________U_

There are 13 13-letter words that match __C________U_. 2 are common words, such as INCONSPICUOUS and UNCEREMONIOUS. A rarer one is RECTITUDINOUS. In this set, O is the most frequent open letter (13 words). 3 words contain a doubled letter.

Full list 13

inconspicuousunceremoniousdichlamydeouslactobacillusmycobacteriumnickeliferoussuccinctoriumuncontentiousdecamethoniummicrophyllousmucocutaneousmycetophagousrectitudinous

About this list

Words
13 (2 common words)
Common example
inconspicuous
Rare example
rectitudinous
Doubled letters
3
Ending in S
10
Most frequent letter
O (13)

Questions

How many 13-letter words matching __c________u_ are there?

13. 2 of them are common words.

What is a common example?

INCONSPICUOUS is among the common words in this set.