12-Letter Words Matching O_________I_

There are 30 12-letter words that match O_________I_. 6 are common words, such as OLEOMARGARIN and ONOMATOPOEIA. A rarer one is OVERLORDSHIP. 1 words contain a doubled letter.

Full list 30

Common words

oleomargarinonomatopoeiaonomatopoeicorthographicosteoporosisoveremphasisoctosyllabiconeirocriticophthalmitisornithologicorthogenesisorthogenetic
oleomargarinonomatopoeiaonomatopoeicorthographicosteoporosisoveremphasisoctosyllabiconeirocriticophthalmitisornithologicorthogenesisorthogeneticorthorhombicosteogenesisosteomalaciaosteoplasticosteoporoticoveremphaticoverexplicitoverspecificoleandomycinoligotrophicorganolepticorthopteroidosteoblasticosteoclasticotosclerosisoveranalysisoverdramaticoverlordship

About this list

Words
30 (6 common words)
Common example
oleomargarin
Rare example
overlordship
Doubled letters
1
Ending in S
7

Questions

How many 12-letter words matching o_________i_ are there?

30. 6 of them are common words.

What is a common example?

OLEOMARGARIN is among the common words in this set.