ratio, audio and motto comes to mind
Some Scrabble words that end with O are:banjocockatoocombocommandocuriododominodumbodynamoechogizmogogoohalohelloherokangarookazookiddokilokimonomemonopatiopeekaboopotatoradiorodeosotattoototomatotootornadotorsotriovetovideovirtuosowhowooyahoozerozoo
Oleo, olio, onto, ordo, orzo and ouzo are 4 letter words that begin with the letter o and end with o.
Igloo, incognito, indigo, inferno, info, into and intro are words. They begin with I and end with o.
Several four letter words begin with the letter q. However, there are no four letter words that begin with the letter q and end with the letter o.
Some four letter words that end with "o" are:zerohaloherohobointojudokiloalsoaltoautoechomemoontopolosilosolotacotarotrioundoveto
Some words that end in VO are:bravoparvooctavosalvo
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern O--HOR-. That is, seven letter words with 1st letter O and 4th letter H and 5th letter O and 6th letter R. In alphabetical order, they are: onshore
Here are some 6-letter words that begin with the letter O and end with the letter E:obligeobtuseoctaneoctaveofficeonlineonsideopaqueopiateopposeoracleorangeordureorioleornateoutageoxlike
There are not many 4 letter words that end with an O. However, there is trio, as well as taco.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -O--O--O. That is, eight letter words with 2nd letter O and 5th letter O and 8th letter O. In alphabetical order, they are: contorno
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
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 45 words with the pattern -O-O. That is, four letter words with 2nd letter O and 4th letter O. In alphabetical order, they are:bohobokoboloboyobozocococohodocodododojogobogogohobohomojocojomokobokolokorokotolobolocologolotomofomojomokomonomozonolopocopogopolopomorotosohosolotocotohotokotomotopotorotoyozobo