Three letter words that have o in the middle include these:
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oaf, oak, oar, oat, obi, Obs. oca, Oct, oct, odd, ode, Odo, off, Ofo, oft, ohm, Ohm, oho, oil, oka, ola, old, ole, olm, , ne, Ono, ooh, ope, ops, opt, ora, orb, orc, ore, Orr, ort, otc, our. out, ova, owe, owl, own
Some five letter words with the last letter O are:achooaudiobanjobingobimbobongobravoburrocargocellocombocondocredodingodiscodittogeckoguanogustoHellohippohydroigloojumbokazoolassolimbolingomachomangomottonachopatiopestophotopianopintoprontoradioRatiorhinorodeoromeosalvoschmostenotabootangotempotorsoturbowackowazooyahoo
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 14 words with the pattern --OO-E. That is, six letter words with 3rd letter O and 4th letter O and 6th letter E. In alphabetical order, they are: amoove blooie broose choose croove droome flooie groove quooke shoole smooge snooze stooge stoope
Outgoing, observant, outstanding, orderly and optimistic are positive words that begin with the letter o.
optimistic
slow