10-Letter Words Matching _______RU_

There are 18 10-letter words that match _______RU_. 3 are common words, such as KETTLEDRUM and PHOSPHORUS. A rarer one is SEQUESTRUM. In this set, S is the most frequent open letter (12 words). 2 words contain a doubled letter.

Full list 18

kettledrumphosphorusretrovirusadenovirusambulacrumcockaloruminvolucrumpanjandrumrhinovirussimulacrumultravirusundershruballosaurusepidendrumlentivirusparvoviruspoliovirussequestrum

About this list

Words
18 (3 common words)
Common example
kettledrum
Rare example
sequestrum
Doubled letters
2
Ending in S
9
Most frequent letter
S (12)

Questions

How many 10-letter words matching _______ru_ are there?

18. 3 of them are common words.

What is a common example?

KETTLEDRUM is among the common words in this set.