13-Letter Words Matching ____S_A______

There are 55 13-letter words that match ____S_A______. 20 are common words, such as AMBASSADORIAL and ANTISPASMODIC. A rarer one is UNASSUAGEABLE. In this set, I is the most frequent open letter (45 words). 15 words contain a doubled letter.

Full list 55

Common words

ambassadorialantispasmodicbackslappingscrosshatchingdevastatinglyforeshadowinggamesmanshipslegislativelyloansharkingsmarksmanshipsmetastasizingovershadowing
ambassadorialantispasmodicbackslappingscrosshatchingdevastatinglyforeshadowinggamesmanshipslegislativelyloansharkingsmarksmanshipsmetastasizingovershadowingoverstatementpainstakinglyreinstatementsalesmanshipssatisfactionstransnationaltransparentlyunsustainableuninstallableautostabilityforestallmenthypostatizingimpassabilityincessantnesslegislatorialmetastabilitynumismatologyperishabilitytranslationalunmistakeablyadjustabilityantislaveriesassistantshipbackscatteredbackstabbingscoresearcherscrossbandingsforeshadowersforestaysailsglasspaperinghardstandingshelmsmanshipshypospadiasesoverslaughingoverstabilityprussianisingprussianizingpunishabilityschismatizingtransparencestransvaluatedtransvaluatesunassuageable

About this list

Words
55 (20 common words)
Common example
ambassadorial
Rare example
unassuageable
Doubled letters
15
Ending in S
18
Most frequent letter
I (45)

Questions

How many 13-letter words matching ____s_a______ are there?

55. 20 of them are common words.

What is a common example?

AMBASSADORIAL is among the common words in this set.