Orlando Otilio
Vancover Grizzlies
agoallegroalsoaltoarmadilloaudio
oy
Onyx
Omen?
Olingo.
Orca
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.
domino, dodo, dingo,
omlet
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.