10-Letter Words Matching _______IR_

There are 31 10-letter words that match _______IR_. 16 are common words, such as ACYCLOVIRS and BACKSTAIRS. A rarer one is WATTLEBIRD. In this set, S is the most frequent open letter (22 words). 5 words contain a doubled letter.

Full list 31

Common words

acyclovirsbackstairscamelhairsdisrepairsdownstairsescritoirehighchairshorsehairsnightshirtrepertoirereservoirsschoolgirl
acyclovirsbackstairscamelhairsdisrepairsdownstairsescritoirehighchairshorsehairsnightshirtrepertoirereservoirsschoolgirlsweatshirtundershirtunderskirtwhirlybirddeckchairsdollarbirdpushchairstailorbirdweaverbirdyellowbirdantechoirsbrownshirtcrosshairsdisconfirmleptospirepraemunireprerequireshorthairswattlebird

About this list

Words
31 (16 common words)
Common example
acyclovirs
Rare example
wattlebird
Doubled letters
5
Ending in S
13
Most frequent letter
S (22)

Questions

How many 10-letter words matching _______ir_ are there?

31. 16 of them are common words.

What is a common example?

ACYCLOVIRS is among the common words in this set.