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O P Q R S T U V W X Y Z | Briticisms |
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oatmeal | porridge |
ocean, the | sea, the |
ocean liner | liner, passenger liner |
odometer | mileometer, milometer |
off-ramp (to exit highway or freeway) | slip road |
off-the-rack (ready-to-wear items in clothes store) | off-the-peg |
off the wall [colloq.] | unconventional |
oftentimes | often |
on-ramp (to access a highway or freeway) | slip road |
on sale | for sale at reduced price |
on the weekend, on New Year's, on Christmas, etc. | at the weekend, at New Year, at Christmas, etc. |
on vacation | on holiday |
one-family house | detached house |
one-way ticket | single, single ticket |
open-pit mining, open-cut mining | opencast mining |
operating room (in hospital) | operating theatre |
optometrist | optician |
orchestra seats (in theater) | stalls |
orient [v.] | orientate [v.] |
out of whack [colloq.] | not looking right or working as it should |
out the (door, window, etc.) [colloq.] | out of the |
out to lunch [colloq.] (crazy) | off one's rocker, crackers [both colloq.] |
outbox | out tray |
outhouse | outdoor lavatory, carsy [slang] |
outlet (electrical) | wall socket, mains socket, plug socket, plug [colloq.], power point |
oven mitt | oven glove |
overalls
(jeans or tough denim pants with cloth covering chest and straps over shoulders) |
dungarees |
overhead [U] or [C] | overheads |
overpass (bridge carrying one road over another) | flyover |