15-Letter Words Matching O__________S___

There are 20 15-letter words that match O__________S___. 9 are common words, such as OBJECTIVENESSES and OBLIVIOUSNESSES. A rarer one is OVERSWEETNESSES. In this set, E is the most frequent open letter (19 words). 19 words contain a doubled letter.

Full list 20

objectivenessesobliviousnessesobnoxiousnessesobsessivenessesobtrusivenessesoffensivenessesoffhandednessesofficiousnessesoutspokennessesopportunenessesoverpessimisticobstinatenessesoperativenessesoutdoorsmanshipoveradvertisingovercompressingovereagernessesoverembellishedoverembellishesoversweetnesses

About this list

Words
20 (9 common words)
Common example
objectivenesses
Rare example
oversweetnesses
Doubled letters
19
Ending in S
15
Most frequent letter
E (19)

Questions

How many 15-letter words matching o__________s___ are there?

20. 9 of them are common words.

What is a common example?

OBJECTIVENESSES is among the common words in this set.