9-Letter Words Matching ______A_R

There are 15 9-letter words that match ______A_R. 5 are common words, such as BACKSTAIR and CAMELHAIR. A rarer one is SHORTHAIR. In this set, S is the most frequent open letter (11 words). 1 words contain a doubled letter.

Full list 15

backstaircamelhairdisrepairhighchairhorsehairapatosaurbucentaurcrosshairdeckchairhadrosaurpterosaurpushchairstegosaurarchosaurshorthair

About this list

Words
15 (5 common words)
Common example
backstair
Rare example
shorthair
Doubled letters
1
Ending in S
0
Most frequent letter
S (11)

Questions

How many 9-letter words matching ______a_r are there?

15. 5 of them are common words.

What is a common example?

BACKSTAIR is among the common words in this set.