15-Letter Words Matching O_____________S

There are 80 15-letter words that match O_____________S. 22 are common words, such as OBJECTIVENESSES and OBLIVIOUSNESSES. A rarer one is OXIDOREDUCTASES. In this set, E is the most frequent open letter (76 words). 32 words contain a doubled letter.

Full list 80

Common words

objectivenessesobliviousnessesobnoxiousnessesobsessivenessesobstructionismsobstructionistsobstructivenessobtrusivenessesoffensivenessesoffhandednessesofficiousnessesophthalmologies
objectivenessesobliviousnessesobnoxiousnessesobsessivenessesobstructionismsobstructionistsobstructivenessobtrusivenessesoffensivenessesoffhandednessesofficiousnessesophthalmologiesoutspokennessesovercapitalizesovercompensatesoverconfidencesoverestimationsovergeneralizesoverindulgencesoverpopulationsoverproductionsoverspecializesodoriferousnessophthalmoscopesopisthognathousopportunenessesornithorhynchusosteomyelitidesoverbearingnessovercommitmentsoverprotectionsoverrefinementsobservabilitiesobstinatenessesobtainabilitiesomnicompetencesopenheartednessopenmouthednessoperationalismsoperationalistsoperativenessesopinionatednessopprobriousnessoptoelectronicsorganochlorinesorganometallicsorthogonalitiesorthophosphatesoscillographiesosmoregulationsoveraccentuatesoveradjustmentsoverarticulatesoverassessmentsovercentralizesovercompliancesovercomplicatesovercorrectionsoverdecorationsoverdependencesoverdiversitiesovereagernessesoverembellishesoverenthusiasmsoverevaluationsoverexaggeratesoverextractionsoverhomogenizesoveringenuitiesoverintensitiesoverinvestmentsovermedicationsoverpersuasionsoverproportionsoverregulationsoversaturationsoverstabilitiesoversweetnessesoverzealousnessoxidoreductases

About this list

Words
80 (22 common words)
Common example
objectivenesses
Rare example
oxidoreductases
Doubled letters
32
Ending in S
80
Most frequent letter
E (76)

Questions

How many 15-letter words matching o_____________s are there?

80. 22 of them are common words.

What is a common example?

OBJECTIVENESSES is among the common words in this set.