O (fixed)

Question 1

Obedient

Answer 1

poslušan

Question 2

Obey

Answer 2

poslušati

Question 3

Object

Answer 3

predmet (thing)
cilj (aim)
protiviti se (be against)

Question 4

Objection

Answer 4

prigovor

Question 5

Obtain

Answer 5

nabaviti

Question 6

Obvious

Answer 6

očigledan

Question 7

Occasion

Answer 7

prilika, događaj, prigoda

Question 8

Ocean

Answer 8

okean

Question 9

O’clock

Answer 9

sati

Question 10

Odd

Answer 10

čudan (strange)
neparan (odd number)

Question 11

Of course

Answer 11

naravno

Question 12

Offence

Answer 12

prekršaj, prestup, uvreda

Question 13

Offer

Answer 13

ponuda (proposal)
ponuditi (present for approval)

Question 14

Office

Answer 14

ured, kancelarija

Question 15

Official

Answer 15

službeni (adjective), službenik (noun–N.B. this also means servant, it means official in the sense it is short for “public servant”).

Question 16

Often

Answer 16

često

Question 17

Oil

Answer 17

nafta (of petroleum)
podmazivati (grease)

Question 18

Old

Answer 18

stari (opposite new/young)

Question 19

Old age

Answer 19

starost

Question 20

Old-fashioned

Answer 20

staromodan

Question 21

Once

Answer 21

jednom, jedanput

Question 22

One

Answer 22

jedan

Question 23

Onion

Answer 23

luk

Question 24

Only

Answer 24

Samo, jedini

Question 25

Opening

Answer 25

otvaranje, otvor

Question 26

Operate

Answer 26

raditi, funkcionirati (work)
operisati (carry out surgery)

Question 27

Operation

Answer 27

operacija

Question 28

Opinion

Answer 28

mišljenje

Question 29

Opportunity

Answer 29

prilika

Question 30

Oppose

Answer 30

protiviti se

Question 31

Opposite

Answer 31

suprotan

Question 32

Orange

Answer 32

narančasto (color)
naranča, pomorandža (fruit)

Question 33

Orchestra

Answer 33

orkestar

Question 34

Order

Answer 34

red, redoslijed (sequence).
poredati (put in a sequence)
naručiti (arrange supply of)

Question 35

Ordinary

Answer 35

običan

Question 36

Organ

Answer 36

orgulje (musical instrument)
organ (body part)

Question 37

Organization

Answer 37

organizacija

Question 38

Organise

Answer 38

organizovati

Question 39

Origin

Answer 39

porijeklo (noun)

Question 40

Other

Answer 40

drugi

Question 41

Otherwise

Answer 41

inače

Question 42

Our

Answer 42

naš

Question 43

Out

Answer 43

vani, napolju (noun, outdoors)
izvan (preposition, outside of)

Question 44

Oval

Answer 44

ovalan

Question 45

Over

Answer 45

završen (finished)
preko, iznad (pertaining to location)

Question 46

Overcrowded

Answer 46

prenatrpan

Question 47

Overdo

Answer 47

pretjerivati

Question 48

Overdue

Answer 48

zakasnio

Question 49

Overhead projector

Answer 49

grafoskop

Question 50

Overhear

Answer 50

preslušati (to overhear)

Question 51

Overnight

Answer 51

preko noći

Question 52

Abroad

Answer 52

u inostranstvu

Question 53

Oversleep

Answer 53

prespavati

Question 54

Overtake

Answer 54

prestići, preteći

Question 55

Owe

Answer 55

dugovati

Question 56

Owing to (due to)

Answer 56

zbog, radi

Question 57

Own

Answer 57

vlastiti, posjedovati

Question 58

Owner

Answer 58

vlasnik

Question 59

Oxygen

Answer 59

kisik

Question 60

Occupation

Answer 60

zanimanje, zabava

Question 61

Occasionally

Answer 61

povremeno

Question 62

To eavesdrop

Answer 62

prisluškivati

Question 63

Obligation(s)

Answer 63

Obaveza (singular), obaveze (plural)