15-Letter Words Starting With AR

There are 15 15-letter words that start with AR. 5 are common words, such as ARBITRARINESSES and ARCHITECTURALLY. A rarer one is ARTERIOGRAPHIES. In this set, I is the most frequent open letter (14 words). 4 words contain a doubled letter.

Full list 15

arbitrarinessesarchitecturallyargumentativelyaromatherapistsartificialitiesarboriculturistarchaeopteryxesarchiepiscopacyarchiepiscopatearchaebacteriumarcheologicallyariboflavinosesariboflavinosisarrondissementsarteriographies

About this list

Words
15 (5 common words)
Common example
arbitrarinesses
Rare example
arteriographies
Doubled letters
4
Ending in S
8
Most frequent letter
I (14)

Questions

How many 15-letter words starting with ar are there?

15. 5 of them are common words.

What is a common example?

ARBITRARINESSES is among the common words in this set.