Slang & Idioms Starting with "O"
81 entries
- Oaf A stupid, clumsy person.
- Obs Observations—routine vital sign checks in hospital.
- Och Oh, ah (Scottish exclamation).
- Odds and ends Miscellaneous small items or tasks
- off colour looking or feeling unwell
- off the beaten track away from popular routes
- Off your face Extremely drunk or high; totally intoxicated.
- Off-colour Not feeling well; also means slightly rude or risqué.
- Off-licence A shop licensed to sell alcohol for consumption elsewhere (British)
- Office banter Playful joking and chat in the workplace
- Office politics Power struggles and maneuvering in the workplace
- Official In a committed, acknowledged relationship (modern dating).
- offline disconnected from internet / unavailable
- Offside Illegal forward position when ball is played.
- Oggy oggy oggy Chant for pasties/encouragement (Cornwall).
- Ohio A place or situation that is weird, cursed, or absurd.
- Oik An uncouth person (derogatory)
- Old Bill The police (British).
- old flame former romantic partner
- Old Hand Experienced and skilled person
- Old money Inherited wealth from established families
- Old pot Old man (father).
- Old school tie The network of privilege among public school alumni
- on a break temporarily separated
- On a roll Experiencing a series of successes.
- on a sticky wicket in a difficult situation
- On call Available to work if needed; not actively working but must respond if summoned.
- On cloud nine Extremely happy, in a state of bliss.
- on fire performing exceptionally well
- On God I swear; for real; expressing sincerity.
- On good terms Having a friendly relationship with someone
- On one's last legs Near exhaustion, collapse, or death.
- On parade Assembled for inspection; on display
- On prescription Medication that requires a doctor's authorisation.
- On Second Thought After reconsidering; changing my mind
- on tablets taking prescription medication
- On Tenterhooks In a state of anxious suspense or tension
- On the ball Alert, efficient, and competent
- On the Dole Receiving unemployment benefit
- On the double Quickly, at double speed
- on the home straight approaching completion
- on the hoof while traveling / without planning
- On the House Free, paid for by the establishment
- On the Job At work/working
- On the lam On the run from the police or authorities.
- On the list Registered for NHS treatment or surgery.
- On the mend Recovering from illness; getting better.
- on the rocks relationship in trouble
- On the ropes In serious trouble; near defeat.
- on the take accepting bribes
- on your last legs near exhaustion or death
- On-again off-again Relationship that repeatedly breaks up and reconciles.
- Once in a blue moon Very rarely, almost never
- One and t'other Mother.
- One for the road A final drink before leaving.
- One-club man Player who spent entire career at one club.
- One-trick pony A person or thing with only one skill or talent.
- One-two Quick pass and return combination.
- Op Operation; military mission
- Open mic A pub event where anyone can perform.
- Oscar Mike On the move (military phonetic)
- other half romantic partner
- Other half One's partner or spouse
- Our kid Sibling or close friend (Scouse/Manchester term of endearment).
- Out like a light Fell asleep instantly.
- Out of left field Completely unexpected or unusual.
- out of sorts feeling unwell or irritable
- out of your league too attractive or successful for you
- Outbuilding An outdoor toilet (euphemism)
- Outpatient Patient who visits hospital but doesn't stay overnight.
- Outwith Outside of, beyond (Scottish formal term).
- Over the counter Medication available without a prescription.
- over the moon extremely happy
- Over the top Excessive; originally leaving the trench to attack
- Overcast Covered in clouds
- Overlap Full-back running past winger on outside.
- Overshare To reveal too much personal information
- Owt Anything (Yorkshire/Northern).
- Oxford Dollar (or five shillings historically).
- Oyster card London transport payment card
- Ozzy Hospital (Scouse).