The Oxford 3000 words

The Oxford 3000 is a list of the 3,000 core words that every learner of English needs to know. The words have been chosen based on their frequency in the Oxford English Corpus and relevance to learners of English. Every word is aligned to the CEFR, guiding learners on the words they should know at A1-B2 level.

ALL a b c d e f g h i j k l m n o p q r s t u v w x y z
  • o'clock (/əˈklɒk/)
  • obey (/əˈbeɪ/)
  • object (/əbˈdʒekt/)
  • objective (/əbˈdʒektɪv/)
  • obligation (/ˌɒblɪˈɡeɪʃn/)
  • observation (/ˌɒbzəˈveɪʃn/)
  • observe (/əbˈzɜːv/)
  • obtain (/əbˈteɪn/)
  • obvious (/ˈɒbviəs/)
  • obviously (/ˈɒbviəsli/)
  • occasion (/əˈkeɪʒn/)
  • occasionally (/əˈkeɪʒnəli/)
  • occur (/əˈkɜː(r)/)
  • ocean (/ˈəʊʃn/)
  • october (/ɒkˈtəʊbə(r)/)
  • odd (/ɒd/)
  • of (/əv/)
  • off (/ɒf/)
  • offence (/əˈfens/)
  • offend (/əˈfend/)
  • offensive (/əˈfensɪv/)
  • offer (/ˈɒfə(r)/)
  • office (/ˈɒfɪs/)
  • officer (/ˈɒfɪsə(r)/)
  • official (/əˈfɪʃl/)
  • often (/ˈɒfn/)
  • oh (/əʊ/)
  • oil (/ɔɪl/)
  • ok (/əʊˈkeɪ/)
  • old (/əʊld/)
  • old-fashioned (/ˌəʊld ˈfæʃnd/)
  • on (/ɒn/)
  • once (/wʌns/)
  • one (/wʌn/)
  • onion (/ˈʌnjən/)
  • online (/ˌɒnˈlaɪn/)
  • only (/ˈəʊnli/)
  • onto (/ˈɒntə/)
  • open (/ˈəʊpən/)
  • opening (/ˈəʊpənɪŋ/)
  • operate (/ˈɒpəreɪt/)
  • operation (/ˌɒpəˈreɪʃn/)
  • opinion (/əˈpɪnjən/)
  • opponent (/əˈpəʊnənt/)
  • opportunity (/ˌɒpəˈtjuːnəti/)
  • oppose (/əˈpəʊz/)
  • opposed (/əˈpəʊzd/)
  • opposite (/ˈɒpəzɪt/)
  • opposition (/ˌɒpəˈzɪʃn/)
  • option (/ˈɒpʃn/)
  • or (/ɔː(r)/)
  • orange (/ˈɒrɪndʒ/)
  • order (/ˈɔːdə(r)/)
  • ordinary (/ˈɔːdnri/)
  • organ (/ˈɔːɡən/)
  • organization (/ˌɔːɡənaɪˈzeɪʃn/)
  • organize (/ˈɔːɡənaɪz/)
  • organized (/ˈɔːɡənaɪzd/)
  • organizer (/ˈɔːɡənaɪzə(r)/)
  • origin (/ˈɒrɪdʒɪn/)
  • original (/əˈrɪdʒənl/)
  • originally (/əˈrɪdʒənəli/)
  • other (/ˈʌðə(r)/)
  • otherwise (/ˈʌðəwaɪz/)
  • ought (/ˈɔːt tə/)
  • our (/ɑː(r)/)
  • ours (/ɑːz/)
  • ourselves (/ɑːˈselvz/)
  • out (/aʊt/)
  • outcome (/ˈaʊtkʌm/)
  • outdoor (/ˈaʊtdɔː(r)/)
  • outdoors (/ˌaʊtˈdɔːz/)
  • outer (/ˈaʊtə(r)/)
  • outline (/ˈaʊtlaɪn/)
  • outside (/ˌaʊtˈsaɪd/)
  • oven (/ˈʌvn/)
  • over (/ˈəʊvə(r)/)
  • overall (/ˌəʊvərˈɔːl/)
  • owe (/əʊ/)
  • own (/əʊn/)
  • owner (/ˈəʊnə(r)/)
English Audio Level

o'clock (adverb)

UK /əˈklɒk/
US /əˈklɑːk/
A1

obey (verb)

UK /əˈbeɪ/
US /əˈbeɪ/
B2

object (verb)

UK /əbˈdʒekt/
US /əbˈdʒekt/
B2

objective (noun)

UK /əbˈdʒektɪv/
US /əbˈdʒektɪv/
B2

obligation (noun)

UK /ˌɒblɪˈɡeɪʃn/
US /ˌɑːblɪˈɡeɪʃn/
B2

observation (noun)

UK /ˌɒbzəˈveɪʃn/
US /ˌɑːbzərˈveɪʃn/
B2

observe (verb)

UK /əbˈzɜːv/
US /əbˈzɜːrv/
B2

obtain (verb)

UK /əbˈteɪn/
US /əbˈteɪn/
B2

obvious (adjective)

UK /ˈɒbviəs/
US /ˈɑːbviəs/
B1

obviously (adverb)

UK /ˈɒbviəsli/
US /ˈɑːbviəsli/
B1

occasion (noun)

UK /əˈkeɪʒn/
US /əˈkeɪʒn/
B1

occasionally (adverb)

UK /əˈkeɪʒnəli/
US /əˈkeɪʒnəli/
B2

occur (verb)

UK /əˈkɜː(r)/
US /əˈkɜːr/
B1

ocean (noun)

UK /ˈəʊʃn/
US /ˈəʊʃn/
A2

october (noun)

UK /ɒkˈtəʊbə(r)/
US /ɑːkˈtəʊbər/
A1

odd (adjective)

UK /ɒd/
US /ɑːd/
B1

of (preposition)

UK /əv/
US /əv/
A1

off (preposition)

UK /ɒf/
US /ɔːf/
A1

offence (noun)

UK /əˈfens/
US /əˈfens/
B2

offend (verb)

UK /əˈfend/
US /əˈfend/
B2

offensive (adjective)

UK /əˈfensɪv/
US /əˈfensɪv/
B2

offer (verb)

UK /ˈɒfə(r)/
US /ˈɔːfər/
A2

office (noun)

UK /ˈɒfɪs/
US /ˈɑːfɪs/
A1

officer (noun)

UK /ˈɒfɪsə(r)/
US /ˈɑːfɪsər/
A2

official (noun)

UK /əˈfɪʃl/
US /əˈfɪʃl/
B2

often (adverb)

UK /ˈɒfn/
US /ˈɔːfn/
A1

oh (exclamation)

UK /əʊ/
US /əʊ/
A1

oil (noun)

UK /ɔɪl/
US /ɔɪl/
A2

ok (exclamation)

UK /əʊˈkeɪ/
US /əʊˈkeɪ/
A1

old (adjective)

UK /əʊld/
US /əʊld/
A1

old-fashioned (adjective)

UK /ˌəʊld ˈfæʃnd/
US /ˌəʊld ˈfæʃnd/
B1

on (preposition)

UK /ɒn/
US /ɑːn/
A1

once (conjunction)

UK /wʌns/
US /wʌns/
B1

one (pronoun)

UK /wʌn/
US /wʌn/
A1

onion (noun)

UK /ˈʌnjən/
US /ˈʌnjən/
A1

online (adverb)

UK /ˌɒnˈlaɪn/
US /ˌɑːnˈlaɪn/
A1

only (adverb)

UK /ˈəʊnli/
US /ˈəʊnli/
A1

onto (preposition)

UK /ˈɒntə/
US /ˈɑːntə/
A2

open (verb)

UK /ˈəʊpən/
US /ˈəʊpən/
A1

opening (noun)

UK /ˈəʊpənɪŋ/
US /ˈəʊpənɪŋ/
B2

operate (verb)

UK /ˈɒpəreɪt/
US /ˈɑːpəreɪt/
B2

operation (noun)

UK /ˌɒpəˈreɪʃn/
US /ˌɑːpəˈreɪʃn/
B1

opinion (noun)

UK /əˈpɪnjən/
US /əˈpɪnjən/
A1

opponent (noun)

UK /əˈpəʊnənt/
US /əˈpəʊnənt/
B2

opportunity (noun)

UK /ˌɒpəˈtjuːnəti/
US /ˌɑːpərˈtuːnəti/
A2

oppose (verb)

UK /əˈpəʊz/
US /əˈpəʊz/
B2

opposed (adjective)

UK /əˈpəʊzd/
US /əˈpəʊzd/
B2

opposite (preposition)

UK /ˈɒpəzɪt/
US /ˈɑːpəzɪt/
A1

opposition (noun)

UK /ˌɒpəˈzɪʃn/
US /ˌɑːpəˈzɪʃn/
B2

option (noun)

UK /ˈɒpʃn/
US /ˈɑːpʃn/
A2

or (conjunction)

UK /ɔː(r)/
US /ɔːr/
A1

orange (noun)

UK /ˈɒrɪndʒ/
US /ˈɔːrɪndʒ/
A1

order (verb)

UK /ˈɔːdə(r)/
US /ˈɔːrdər/
A1

ordinary (adjective)

UK /ˈɔːdnri/
US /ˈɔːrdneri/
A2

organ (noun)

UK /ˈɔːɡən/
US /ˈɔːrɡən/
B2

organization (noun)

UK /ˌɔːɡənaɪˈzeɪʃn/
US /ˌɔːrɡənəˈzeɪʃn/
A2

organize (verb)

UK /ˈɔːɡənaɪz/
US /ˈɔːrɡənaɪz/
A2

organized (adjective)

UK /ˈɔːɡənaɪzd/
US /ˈɔːrɡənaɪzd/
B1

organizer (noun)

UK /ˈɔːɡənaɪzə(r)/
US /ˈɔːrɡənaɪzər/
B1

origin (noun)

UK /ˈɒrɪdʒɪn/
US /ˈɔːrɪdʒɪn/
B2

original (noun)

UK /əˈrɪdʒənl/
US /əˈrɪdʒənl/
B1

originally (adverb)

UK /əˈrɪdʒənəli/
US /əˈrɪdʒənəli/
B1

other (adjective, pronoun)

UK /ˈʌðə(r)/
US /ˈʌðər/
A1

otherwise (adverb)

UK /ˈʌðəwaɪz/
US /ˈʌðərwaɪz/
B2

ought (modal verb)

UK /ˈɔːt tə/
US /ˈɔːt tə/
B1

our (determiner)

UK /ɑː(r)/
US /ɑːr/
A1

ours (pronoun)

UK /ɑːz/
US /ɑːrz/
B1

ourselves (pronoun)

UK /ɑːˈselvz/
US /ɑːrˈselvz/
A2

out (adverb, preposition)

UK /aʊt/
US /aʊt/
A1

outcome (noun)

UK /ˈaʊtkʌm/
US /ˈaʊtkʌm/
B2

outdoor (adjective)

UK /ˈaʊtdɔː(r)/
US /ˈaʊtdɔːr/
B1

outdoors (adverb)

UK /ˌaʊtˈdɔːz/
US /ˌaʊtˈdɔːrz/
B1

outer (adjective)

UK /ˈaʊtə(r)/
US /ˈaʊtər/
B2

outline (verb)

UK /ˈaʊtlaɪn/
US /ˈaʊtlaɪn/
B2

outside (preposition)

UK /ˌaʊtˈsaɪd/
US /ˌaʊtˈsaɪd/
A2

oven (noun)

UK /ˈʌvn/
US /ˈʌvn/
A2

over (preposition)

UK /ˈəʊvə(r)/
US /ˈəʊvər/
A1

overall (adverb)

UK /ˌəʊvərˈɔːl/
US /ˌəʊvərˈɔːl/
B2

owe (verb)

UK /əʊ/
US /əʊ/
B2

own (verb)

UK /əʊn/
US /əʊn/
A2

owner (noun)

UK /ˈəʊnə(r)/
US /ˈəʊnər/
A2