11-Letter Words Matching A_______D__

There are 16 11-letter words that match A_______D__. 4 are common words, such as ACKNOWLEDGE and AFICIONADOS. A rarer one is ASAFOETIDAS. In this set, E is the most frequent open letter (12 words). 3 words contain a doubled letter.

Full list 16

acknowledgeaficionadosapprehendedarthritidesabandonedlyaborticidesaggrievedlyautostradasacrylamidesaficionadasallantoidesantimonidesarchdukedomarteritidesarthropodanasafoetidas

About this list

Words
16 (4 common words)
Common example
acknowledge
Rare example
asafoetidas
Doubled letters
3
Ending in S
10
Most frequent letter
E (12)

Questions

How many 11-letter words matching a_______d__ are there?

16. 4 of them are common words.

What is a common example?

ACKNOWLEDGE is among the common words in this set.