13-Letter Words Matching V_________S__

There are 16 13-letter words that match V_________S__. 5 are common words, such as VACUOUSNESSES and VIBRAPHONISTS. A rarer one is VOLUNTARYISTS. 11 words contain a doubled letter.

Full list 16

vacuousnessesvibraphonistsviciousnessesviscountessesvolunteerismsvertiginouslyviscousnessesvaliantnessesvariousnessesverbosenessesvibraharpistsvisiblenessesvoguishnessesvolublenessesvoluntaryismsvoluntaryists

About this list

Words
16 (5 common words)
Common example
vacuousnesses
Rare example
voluntaryists
Doubled letters
11
Ending in S
15

Questions

How many 13-letter words matching v_________s__ are there?

16. 5 of them are common words.

What is a common example?

VACUOUSNESSES is among the common words in this set.