o
O
OAO
OASIS
OATUS
OAUS
OB
OBE
OBF
OBI
object value
object-oriented programming (OOP)
OBNR
OBO
OBS
obsolete
OBTW
OBX
OC
OCD
OCR
OD
ODBC
ODTAA
OEM
OF
OFAP
ofc
off the chain
off-deck
off-the-shelf
office drone
official site
offline
offline browser
offline buying
offshored
offsite storage
OFX
OG
ogooglebar
OH
OHF
ohnosecond
OIC
OICU812
OIRWIS
OIT
OK
OL
OLAP
OLE
OLED
OLGA
OLL
OLLI
OLN
OLO
OLTP
OM
OMB
OMDB
OME
OMFG
OMG
OMIK
OML
OMMA
omnicide
OMW
OMWT
on fleek
on ice
on task
on the team
on velvet
on-demand
on-screen
on-the-fly
onboarding
one-click shopping
one-stop shop
ONID
onion routing
online
online ad
online auction
online banking
online buying
online community
online crime
online dating
online education
online gambling
online hate speech
online jargon
online job searching
online marketing
online newsletter
online porn
online profiling
online review
online shopping
online survey
ONNA
ONNTA
ontology
ONUD
OO
OOAK
OOC
OOF
OOI
OOMF
OOO
OOS
OOT
OOTB
OOTC
OOTD
OOTT
OOYF
OP
open
open access
open garden
open network
open social
open source
open the drapes
open your kimono
open-collar workers
Opera
operating system
OPS
opt-in
opt-out
optical network
optimize
optoelectronic
orbiting
org or .org
organ donor
organic search results
organized coincidence
orphan annie
orphans
OS
OS X
OS/2
OSF
OSI
OSIF
OSINTOT
OSP
OST
ostrich years
OT
otaku
OTASOIC
OTB
OTC
OTF
OTH
OTIS
OTL
OTOH
OTP
OTS
OTT
OTTOMH
OTW
OUSU
out-of-pocket
out-of-the-box
out-of-the-garage
outage
outbound link
outrage porn
outsource
outstream video
ova
over-Mac'd
overconnectedness
overshare
OWL
owls
OWTTE
oy vey
OZ
O_O