once - jednou
BrE
/'wʌns/
AmE
/'wʌns/

adverb - one time

 
obliged - zavázán
BrE
/ə'blaɪdʒd/
AmE
/ə'blaɪdʒd/

adjective - in someone's debt, feeling gratitude

 
over - více než, přes
BrE
/'əʊvə/
AmE
/'oʊvər/

preposition - more than

 
occupation - povolání, zaměstnání
BrE
/ˌɒkjʊ'peɪʃn/
AmE
/ˌɑ:kjʊ'peɪʃn/

noun - the job that you do

 
oh - jé, ó, á, ach
BrE
/'əʊ/
AmE
/'oʊ/

interjection - an exclamation that shows surprise or excitement

open
open - otevřený
BrE
/'əʊpən/
AmE
/'oʊpən/

adjective - not closed

 
opposite - protější
BrE
/'ɒpəsɪt/
AmE
/'ɑ:pəsɪt/

adjective - being on the other side of something

 
opposite - naproti
BrE
/'ɒpəsɪt/
AmE
/'ɑ:pəsɪt/

adverb - on the other side of something

 
of course - samozřejmě, zajisté, jistě
BrE
/əf'kɔ:s/
AmE
/əf'kɔ:rs/

adverb - certainly

outside
outside - ven, venku, před
BrE
/aʊt'saɪd/
AmE
/aʊt'saɪd/

adverb - not inside, not in a building, in a place furthest from the centre

owe
owe - dlužit (peníze)
BrE
/'əʊ/
AmE
/'oʊ/

verb - to have to pay some money to somebody

 
ore - ruda
BrE
/'ɔ:/
AmE
/'ɔ:r/

noun - a mineral from which a metal can be extracted (such as iron etc.)

oar
oar - veslo
BrE
/'ɔ:/
AmE
/'ɔ:r/

noun - a wooden pole with a flat end that you use to row a boat

oak
oak - dub
BrE
/'əʊk/
AmE
/'oʊk/

noun - a large leaf tree with hard wood

 
odd - lichý (číslo)
BrE
/'ɒd/
AmE
/'ɑ:d/

adjective - a number that you cannot easily divide by two, e.g. 1, 3, 5 etc, opposite of 'even'