Writing Tips
http://www.btb.termiumplus.gc.ca
Common menu bar links
Institutional Links
-
Translation Bureau
Language Portal of Canada
-
TERMIUM Plus®
-
Index O
- O
- oblique
- oblivious of
- oblivious to
- obvious
- occur
- occurred
- occurrence
- o’clock
- oct-
- octa-
- octo-
- octopus
- octopuses
- ocul-
- odont-
- odorant
- odoriferous
- odorous
- odour
- oeno-
- offence
- offense
- offensive
- official
- officious
- offline
- off-line
- off of
- of the order of
- Oh
- OK
- O.K.
- okay
- old
- old custom
- older
- old fashion
- old fashioned
- old-fashioned
- olig-
- oligo-
- ombro-
- ombudsman (Linguistic recommendation from the Translation Bureau)
- omni-
- ON
- on (1)
- on (2)
- on account of
- on behalf of
- onco-
- one
- one of those who
- on foot
- online
- on-line
- on numerous occasions
- onoma-
- onomato-
- Ont.
- Ontarian
- Ontario
- on the basis of
- on the diagonal
- on the one hand
- on the order of
- on the other hand
- on the part of
- on to
- onto
- onward
- onwards
- oo-
- opposite from
- opposite of
- opposite to
- opposition (in)
- opt-
- opthalm-
- opthalmo-
- opto-
- oral
- order
- ordinance
- ordnance
- ori-
- orient
- orientate
- original founder
- originate at
- originate from
- originate in
- originate with
- ornitho-
- oro-
- osseo-
- ossi-
- osteo-
- oto-
- Ottawa
- Ottawan
- out-
- outside of
- ov-
- over
- over all
- overall
- overlook (1)
- overlook (2)
- oversee
- oversight
- overused cliché
- ovi-
- ovo-
- owing to
- owing to the fact that
Proactive Disclosure
Important notice
Writing Tips has been archived and won’t be updated before it is permanently deleted.
For the most up-to-date content, please consult Writing Tips Plus, which combines content from Writing Tips and The Canadian Style. And don’t forget to update your bookmarks!
Search and Functionalities Area
o’clock
O’clock is used with times on the hour, whether those times are written as words or in numbers (e.g. three o’clock or 3 o’clock, but not 4:30 o’clock).
- Mischa said he would arrive about four o’clock in the morning.
- When the Peace Tower bells rang at 10 o’clock, the veterans assembled for the parade.
Never use a.m. or p.m. with the expression o’clock.
- Sarah called at 5 o’clock (not at 5 o’clock p.m.).
© Public Services and Procurement Canada, 2024
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
Writing tools – Writing Tips
A product of the Translation Bureau
