12-Letter Words Ending in OS

There are 17 12-letter words that end in OS. 6 are common words, such as AMONTILLADOS and ARCHIPELAGOS. A rarer one is SEXTODECIMOS. In this set, C is the most frequent open letter (15 words). 8 words contain a doubled letter.

Full list 17

amontilladosarchipelagosbraggadocioschiaroscurosdecrescendosvioloncellosaccelerandosexophthalmosinternunciosviolincellosafficionadoscaudillismoscinquecentoscountermemosembarcaderospunchinellossextodecimos

About this list

Words
17 (6 common words)
Common example
amontillados
Rare example
sextodecimos
Doubled letters
8
Ending in S
17
Most frequent letter
C (15)

Questions

How many 12-letter words ending in os are there?

17. 6 of them are common words.

What is a common example?

AMONTILLADOS is among the common words in this set.