ogress - Ouagadougou
- on leave
- on location
- on no consideration
- on oath
- on occasion
- ON octane number
- on one's deathbed
- on one's own account
- on one's own responsibility
- on order
- on paper
- on patrol
- on penalty of
- on private account
- on purpose
- on purpose to
- on repeated occasions
- on schedule
- on second thoughts
- on Shanks's mare