Acronyms - Letter O
American English Standard Acronyms - Letter O

In this lesson you will learn American English standard acronyms beginning with the letter O.
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Acronyms A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Acronym Meaning
O Opponent
O Or
O Over
O4U Only for you
OA Online auctions
OAK Oakland International Airport
OAO Over And Out
OATUS On A Totally Unrelated Subject
OAUS On An Unrelated Subject
OB Obligatory
OB Oh baby
OB Oh brother
OBE Overcome By Events
OBO Or Best Offer
OBTW Oh By The Way
OBV Obviously
OBX Old Battle Axe
OC Original Character
OC Own Character
OCD Obsessive Compulsive Disorder
Acronym Meaning
ODTAA One Damn Thing After Another
OF Old Fart
OFAP Old Fart At Play
ofc of course
OG Original Gangsta
OGG Kahului Airport
OGIM Oh God, it's Monday
OH Overheard
OI Operator indisposed
OIB Oh, I'm back
OIC Oh, I See
OICU812 Oh I See, You Ate One Too
OIRWIS Oh I Remember What I Said
OJ Only joking
OK all correct
OK okay
OL Old Lady
OLL Online Love
OLN OnLine Netiquette
OLO Only Laughed Once
OM Oh, my
OM Old Man
OMA Oman
OMA Omaha Eppley Airfield
OMAA Oh, my aching Ass
OMB Oh My Buddha
OMDB Over My Dead Body
OME Oh My Evolution
OMFG Oh My Fucking God
OMG Oh My God
OMGYG2BK Oh my God, you got to be kidding
OMIK Open Mouth, Insert Keyboard
OML Oh My Lord
OMMA Oh My Aching Ass
OMW Oh My Word
OMW On My Way
OMWT On My Way Too
ONID Oh No I Didn't
ONL Online
ONNA Oh No, Not Again
ONNTA Oh No, Not This Again
ONT Ontario International Airport
ONUD Oh No You Didn't
OO Over and Out
OOAK One Of A Kind
OOC Out Of Character
OOC Out Of Control
OOF Out Of Facility
OOH Out of here
OOI Out Of Interest
OOO Out Of Commission
OOO Out Of Office
OOS Out Of Stock
OOT Out Of Touch
OOTB Out Of The Blue
OOTB Out Of The Box
OOTC Obligatory On Topic Comment
OOTD One of these days
OOTO Out of the office
OP On phone
ORD O'Hare International Airport
ORLY Oh really?
OS Operating system
OSIF Oh Shit I Forgot
OSINTOT Oh Shit I Never Thought Of That
OST On Second Thought
OT Off Topic
OTASOIC Owing To A Slight Oversight In Construction
OTB Off to bed
OTC Over The Counter
OTF On The Floor
OTF On The Fone
OTFL On the floor laughing
OTH Off The Hook
OTL Out To Lunch
OTOH On The Other Hand
OTP On The Phone
OTR On The Road
OTS Off The Shelf
OTS On The Scene
OTS On The Spot
OTT Over The Top
OTTOMH Off The Top Of My Head
OTW Off The Wall
OTW Off to work
OTW Otherwise
OUSU Oh You Shut Up
ova over
OWTTE Or Words To That Effect
OYO On your own
OZ Australia
American English Standard Acronym Challenge - Letter O

Hey do you know any English acronyms used in texting, instant messaging, and social networking websites beginning with the letter O not listed on this page?

Then leave a comment below and add your acronyms to Fun Easy English.