9-Letter Words Containing IRT

There are 34 9-letter words that contain IRT. 15 are common words, such as BIRTHDAYS and BIRTHMARK. A rarer one is VIRTUOSAS. In this set, S is the most frequent open letter (24 words). 8 words contain a doubled letter.

Full list 34

Common words

birthdaysbirthmarkbirthratedirtinessminiskirtmirthlessoutskirtsshirtingsshirtlessshirttailsquirtingthirteens
birthdaysbirthmarkbirthratedirtinessminiskirtmirthlessoutskirtsshirtingsshirtlessshirttailsquirtingthirteensthirtiethvirtuallyvirtuososbirthrootbirthwortmaxiskirtoverskirtshirtiestvirtuosicbedirtiedbedirtiesbegirtingbirthdateflirtiesthoopskirtovershirtredshirtsskirtingssquirtersthirtyishundergirtvirtuosas

About this list

Words
34 (15 common words)
Common example
birthdays
Rare example
virtuosas
Doubled letters
8
Ending in S
13
Most frequent letter
S (24)

Questions

How many 9-letter words containing irt are there?

34. 15 of them are common words.

What is a common example?

BIRTHDAYS is among the common words in this set.