Absorbent, cocoanuts, dinosaurs, floodgate and honorable are 9 letter words. The 4th letter is the letter o.
ACROBATIC that is the word i found in the top of my head(: 9 letters, O for the 4th...helpful? (:
mistletoe mistletoe
Some five letter words with second letter O and fourth letter E are:bogeybowelbowercometcovencoverdowelhotellosermodelmowernoseynovelpowerrover
Some four letter words with second letter U and fourth letter O are:autoeurojudokudoouzo
Five letter words with the second and fourth letter O are:boronbosomcocoacoloncolordonorhonormoronmotorrobotrotor
tabulated
oblong
Monopoly
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern O-O---O--. That is, nine letter words with 1st letter O and 3rd letter O and 7th letter O. In alphabetical order, they are: otorrhoea
solar
pilot
orioles