13-Letter Words Matching _____A__S____

There are 19 13-letter words that match _____A__S____. 5 are common words, such as ANTIMACASSARS and DELICATESSENS. A rarer one is SEMIPARASITIC. In this set, I is the most frequent open letter (17 words). 6 words contain a doubled letter.

Full list 19

antimacassarsdelicatessensgeneralissimolaureateshipsmountainsidesantiparasiticchaplainshipscontrabassoonectoparasitesendoparasitesbiostatisticsblepharospasmcontrabassistectoparasiticendoparasiticmyxomatosisespsittacosisessemiparasitessemiparasitic

About this list

Words
19 (5 common words)
Common example
antimacassars
Rare example
semiparasitic
Doubled letters
6
Ending in S
11
Most frequent letter
I (17)

Questions

How many 13-letter words matching _____a__s____ are there?

19. 5 of them are common words.

What is a common example?

ANTIMACASSARS is among the common words in this set.