13-Letter Words Matching _R_U_________

There are 16 13-letter words that match _R_U_________. 8 are common words, such as ARDUOUSNESSES and ARGUMENTATION. A rarer one is TROUBLOUSNESS. 6 words contain a doubled letter.

Full list 16

arduousnessesargumentationargumentativegrouchinessestraumaticallytroublemakerstroubleshootstroublesomelydraughtboardsgroundskeepertroublemakinggroundbreakerpreuniversitytriumphalismstriumphaliststroublousness

About this list

Words
16 (8 common words)
Common example
arduousnesses
Rare example
troublousness
Doubled letters
6
Ending in S
8

Questions

How many 13-letter words matching _r_u_________ are there?

16. 8 of them are common words.

What is a common example?

ARDUOUSNESSES is among the common words in this set.