Irish Phrases Starting with "O"

• Dé Céadaoin seo chugainn
  (on) next Wednesday
• A chait
  : O cat
• A fhiaclóir
  O dentist
• A chailín
  O girl
• A spideog
  O robin
• A shiúr
  O sister
• A Mhaighdean
  O Virgin
• Ó Briain
  O'Brien
• a chlog
  o'clock
• Ó Dubhuir
  O'Dwyer
• Ó Sé
  O'Shea
• doire
  oak grove
• min choirce
  oatmeal
• bac
  obstacle
• slí bheatha
  occupation (lit. "way of life")
• Deireadh Fómhair
  October
• Deireadh Fómhair
  October
• míosa
  of a month
• Athar
  Of father (genitive case)
• mo pháistí
  of my children
• na taobhroinne
  of the aisle
• an chait
  of the cat
• an mhadra
  of the dog 
• an tsiopa
  of the shop
• Uíbh Fhailí
  Offaly
• oifig
  office
• oifigí
  offices
• oifigí
  offices
• Áras an Uachtaráin
  Official Residence of the President
• go minic
  often
• Óró mo bháidín
  Oh my little boat
• Óró mo churaichín ó
  Oh my little currach oh
• Dar Crom. Ní féidir liom é sin a íoc!
  Oh my. I can't pay that!
• A Mhaighdean! Cad a tharla? An bhfuil tú ceart go leor?
     Oh no! What happened? Are you OK? 
• Ó tá, tá tú go hálainn!
  Oh yes, you are beautiful!
• Óró, 'sé do bheatha abhaile
  Oh, welcome home
• Ó, tá fáilte romhat!
  Oh, you're welcome!
• Och... tá brón orm!
  Oh... I'm sorry!
• Och... tá brón orm!
  Oh... I'm sorry!
• ola
  oil
• Shuigh Oisín taobh thiar de Niamh ar mhuin an chapaill bháin 
  Oisín sat behind Niamh on the white horse's back
• Ceart go leor
  OK
• Ceart go leor, mar sin. I mbliana, tá mé chun deich gcileagram a chailleadh agus deich leabhar a léamh!
  Okay then. This year I will lose ten kilograms and read ten books!
• Tá go maith.
  Okay.
• Ceart go leor. Cad fút féin?
  Okay. What about you?
• Sean
  old 
• sean
  old
• seanfhoirgnimh
  old buildings
• seanéadaí
  old clothes
• Sean-Ghaeilge
  Old Irish
• seanfhear
  old man
• seanduine
  old person
• sean-nós
  old style (music or dance)
• seanfhaiseanta
  old-fashioned
• níos sine
  older
• ológ
  olive
• ar
  on
• Ar
  On
• ar feirm
  on a farm
• Ar chreig i lár na farraige i measc éanacha na mbeann
  On a rock in the middle of the ocean amongst the birds of the cliffs
• ar an Luan
  on a/the Monday, on Mondays
• uirthi
  on her
• air
  on him
• orm
  on me
• oíche Dé Luain
  on Monday night
• ar mo shiúlta
  on my travels
• ar thaobh na láimhe clé
  on the left-hand side
• Ar an lá cheana
  On the previous day.
• ar thaobh na láimhe deise
  on the right-hand side
• Ar an lá céanna
  On the same day.
• ar an tábla
  on the table
• ar an mbord
  on the table (Munster, Connacht)
• ar an bhord
  on the table (Ulster)
• ar an bhord
  on the table (Ulster)
• orthu
  on them
• ar maidin Déardaoin
  on Thursday morning
• orainn
  on us
• ort
  on you
• oraibh
  on you (pl)
• uair sa mhí
  once a month
• uair sa tseachtain
  once a week
• Seal dá rabhas im’ mhaighdean shéimh
  Once I was gentle maiden
• Aithníonn ciaróg ciaróg eile
  One beetle recognises another (Takes one to know one)
• aon bhád amháin
  one boat. Literally, you could translate this to "One single boat."
• tiománaí amháin
  one driver
• deoch an dorais
  one for the road (lit. "drink of the door")
• bileog amháin
  one sheet
• aon bhileog amháin
  one sheet
• aon tábla amháin
  one table. Literally, you could translate this to "One single table."
• Ní scaoth breac.
  One trout is not a multitude. (proverb) i.e. “One swallow does not a summer make”
• bean amháin
  one woman
• A haon, a dó, muc is bó,
  One, two, a pig and a cow,
• A haon, a dó, a trí, a ceathair.
  One, two, three, four.
• oinniún
  onion
• oscail
  open
• oscail na fuinneoga
  open the windows
• Oscailte
  opened
• searmanas oscailte
  opening ceremony
• ceoldráma
  opera
• deis
  opportunity