12-Letter Words Matching A_L_________

There are 21 12-letter words that match A_L_________. 6 are common words, such as ALLERGICALLY and ALLEVIATIONS. A rarer one is ALLOSAURUSES. 18 words contain a doubled letter.

Full list 21

allergicallyalleviationsalliteratingalliterationalliterativeallusivenessallegorizingallelomorphsallelopathicallomorphismallotropicalailurophilesailurophobesailurophobiaallegorisingallegorizersalloantibodyalloantigensallograftingallopurinolsallosauruses

About this list

Words
21 (6 common words)
Common example
allergically
Rare example
allosauruses
Doubled letters
18
Ending in S
9

Questions

How many 12-letter words matching a_l_________ are there?

21. 6 of them are common words.

What is a common example?

ALLERGICALLY is among the common words in this set.