blocked - ucpaný, zablokovaný
BrE
/'blɒkt/
AmE
/'blɑ:kt/

adjective - impossible to be passed through; prevented from being moved

 
body clock - vnitřní hodiny, fyziologický rytmus těla
BrE
/'bʌdi klɒk/
AmE
/'bʌdi klɑ:k/

noun - the circadian rhythm, it regulates sleeping patterns, body temperature, hormone levels etc.

beware
beware - dát si pozor
BrE
/bɪ'weə/
AmE
/bɪ'wer/

verb - to be careful, to look out

 
Oscar - Oskar
BrE
/'ɒskə/
AmE
/'ɑ:skər/

noun - a man's name

 
oblivion - zapomnění
BrE
/ə'blɪviən/
AmE
/ə'blɪviən/

noun - a state when something is not remembered any more

 
offshore - na volném moři, na moři
BrE
/ˌɒf'ʃɔ:/
AmE
/ˌɑ:f'ʃɔ:r/

adverb - at some distance from the coast, in the sea

 
oftentimes - častokrát
BrE
/'ɒfntaɪmz/
AmE
/'ɑ:fntaɪmz/

adverb, dated - often

 
occupy - okupovat, zabrat, obsadit, uchvátit
BrE
/'ɒkjʊpaɪ/
AmE
/'ɑ:kjəpaɪ/

verb - to take control of an area by force (esp. about an army etc.)

 
originate - vzniknout
BrE
/ə'rɪdʒəneɪt/
AmE
/ə'rɪdʒəneɪt/

verb - to start to exist

 
overwhelm - přemoci, přemáhat
BrE
/ˌəʊvə'welm/
AmE
/ˌoʊvər'welm/

verb - to defeat somebody by force

obsessed
obsessed - posedlý
BrE
/əb'sest/
AmE
/əb'sest/

adjective - interested in something too much; unable to think about anything else

 
opt - zvolit si, rozhodnout se pro, zvolit, volit, vybrat, vybrat si
BrE
/'ɒpt/
AmE
/'ɑ:pt/

verb - to decide for something; to choose something

 
on the contrary - naopak
BrE
/ˌɒn ðə'kɒntrəri/
AmE
/ˌɑ:n ðə'kɑ:ntrəri/

adverb - the opposite is true

optician's
optician's - optika (obchod)
BrE
/ɒp'tɪʃənz/
AmE
/ɑ:p'tɪʃənz/

noun - a shop where you can buy glasses

 
on cue - v pravý okamžik
BrE
/ɒn'kju:/
AmE
/ɑ:n'kju:/

adverb - exactly at the time that is expected or needed