12-Letter Words Matching _________AS_

There are 27 12-letter words that match _________AS_. 2 are common words, such as IDIOSYNCRASY and STEEPLECHASE. A rarer one is TRANSAMINASE. 7 words contain a doubled letter.

Full list 27

Common words

idiosyncrasysteeplechasecounterblastdisembarrasserythroblasthospholipasenucleotidaseribonucleasesparrowgrassspongioblastsynchroflashweatherglass
idiosyncrasysteeplechasecounterblastdisembarrasserythroblasthospholipasenucleotidaseribonucleasesparrowgrassspongioblastsynchroflashweatherglassantibacklashbronchospasmcarbohydraseendonucleaseenterokinaseergastoplasmexopeptidasehardinggrassjohnsongrassnonbroadcastnoncolorfastphragmoplastprebreakfastthoroughbasstransaminase

About this list

Words
27 (2 common words)
Common example
idiosyncrasy
Rare example
transaminase
Doubled letters
7
Ending in S
6

Questions

How many 12-letter words matching _________as_ are there?

27. 2 of them are common words.

What is a common example?

IDIOSYNCRASY is among the common words in this set.