13-Letter Words Matching O_____S______

There are 19 13-letter words that match O_____S______. 5 are common words, such as OBSOLESCENCES and OBVIOUSNESSES. A rarer one is OVERRESPONDED. 10 words contain a doubled letter.

Full list 19

obsolescencesobviousnessesominousnessesonerousnessesovermasteringobsolescentlyoverassertiveoverhastinessoverinsistentodorousnessesoptimisationsorganisationsoverabstractsoverassertingoverassertionoverdesigningoverdiscountsoverissuancesoverresponded

About this list

Words
19 (5 common words)
Common example
obsolescences
Rare example
overresponded
Doubled letters
10
Ending in S
11

Questions

How many 13-letter words matching o_____s______ are there?

19. 5 of them are common words.

What is a common example?

OBSOLESCENCES is among the common words in this set.