12-Letter Words Matching O________A__

There are 18 12-letter words that match O________A__. 4 are common words, such as OVERABUNDANT and OVERDECORATE. A rarer one is OXALOACETATE. 3 words contain a doubled letter.

Full list 18

overabundantoverdecorateoverestimateoverpopulateorthopteransoscillogramsoscillographovermedicateoverregulateoblanceolateoverabstractoverarousalsoverdominantoverliteraryoverpersuadeoverprogramsoversaturateoxaloacetate

About this list

Words
18 (4 common words)
Common example
overabundant
Rare example
oxaloacetate
Doubled letters
3
Ending in S
4

Questions

How many 12-letter words matching o________a__ are there?

18. 4 of them are common words.

What is a common example?

OVERABUNDANT is among the common words in this set.