12-Letter Words Matching _________A_D

There are 15 12-letter words that match _________A_D. 7 are common words, such as CHECKERBOARD and CONCERTINAED. A rarer one is CARRYFORWARD. In this set, O is the most frequent open letter (14 words). 4 words contain a doubled letter.

Full list 15

checkerboardconcertinaedhenceforwardhousehusbandmultiplicandplasterboardshuffleboardclapperboarddraughtboardflutterboardscraperboardscratchboardvacationlandweatherboardcarryforward

About this list

Words
15 (7 common words)
Common example
checkerboard
Rare example
carryforward
Doubled letters
4
Ending in S
0
Most frequent letter
O (14)

Questions

How many 12-letter words matching _________a_d are there?

15. 7 of them are common words.

What is a common example?

CHECKERBOARD is among the common words in this set.