13-Letter Words Matching _I_____U_____

There are 21 13-letter words that match _I_____U_____. 14 are common words, such as DISTINGUISHED and DISTINGUISHES. A rarer one is NIGHTCLUBBERS. 9 words contain a doubled letter.

Full list 21

distinguisheddistinguishesdistributionshilariousnessjitterbuggersjitterbugginglitigiousnessmiscalculatedmiscalculatesmisconductingnightclubbingrighteousnessvicariousnessvivaciousnessdistributablebimolecularlycircumfusionsliebfraumilchmisevaluatingmisevaluationnightclubbers

About this list

Words
21 (14 common words)
Common example
distinguished
Rare example
nightclubbers
Doubled letters
9
Ending in S
11

Questions

How many 13-letter words matching _i_____u_____ are there?

21. 14 of them are common words.

What is a common example?

DISTINGUISHED is among the common words in this set.