Word Formation & Derivatives
Prefixes, suffixes, compounds, inflections, and derived word families.
11746 words
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Some words in this topic are A2–C2 — part of Pro. A1 words are always free.
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interference
C1
/ˌɪntəɹˈfɪɹɪns/
The act of getting involved in something that does not concern you.
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magistrate
C1
/ˈmæd͡ʒ.ɪˌstɹeɪt/
An official who acts as a judge in a lower court, dealing with minor offences.
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felony
C1
/ˈfɛləni/
A serious criminal offense, which, under United States federal law, is punishable by a term of imprisonment of not less than one year or by the death penalty in the most serious offenses.
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authentic
C1
/ɔˈθɛn.tɪk/
Real and genuine, not a fake or copy.
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petition
C1
/pəˈtɪʃ.ən/
A formal written request, usually signed by many people, asking an authority to do something.
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elaborate¹
C1
/ɪˈlæb.(ə.)ɹət/
Having many parts or details; carefully and richly worked out.
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elaborate²
C1
/ɪˈlæb.ə.ɹeɪt/
To give more details about something you have said.
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mechanism
C1
/ˈmik.ə.nɪ.zəm/
A part of a machine or a set of moving parts that does a particular job.
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psychiatric
C1
/ˌsaɪ.kiˈæt.ɹɪk/
Relating to mental illness and its treatment.
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diplomatic
C1
/ˌdɪpləˈmætɪk/
Relating to the work of managing relations between countries.
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harassment
C1
/həˈɹæs.mənt/
Repeated, deliberate behaviour that pesters, threatens, or intimidates someone.
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irony
C1
/ˈaɪ.ɹə.ni/
A situation that is strange or amusing because it is the opposite of what you expect.
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jurisdiction
C1
/d͡ʒʊɹɪsˈdɪkʃən/
The official power to make legal decisions and apply the law.
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compartment
C1
/kəmˈpɑɹtmənt/
A room, or section, or chamber, typically within a vehicle.
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verify
C1
/ˈvɛɹɪfaɪ/
To check that something is true, accurate, or correct.
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carpenter
C1
/ˈkɑɹpəntɚ/
A person whose job is making and repairing wooden things
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frustrating
C1
/ˈfɹʌsˌtɹeɪ̯tɪŋ/
Making you feel annoyed or impatient because you cannot do or achieve something.
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denial
C1
/dɪˈnaɪəl/
A statement that something is not true.
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collective
C1
/kəˈlɛktɪv/
Done by or shared between all members of a group.
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processing
C1
/ˈpɹɑsɛsɪŋ/
The act of dealing with something through a set series of steps.
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discretion
C1
/dɪˈskɹɛʃən/
The freedom to decide something for yourself, using your own judgement.
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machinery
C1
/məˈʃiːnəɹi/
Machines as a group, especially large ones used in industry.
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intervention
C1
/ɪntɚˈvɛnʃən/
The act of becoming involved in a situation in order to change or help it.
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banner
C1
/ˈbænɚ/
A large sign or strip of cloth with a message, often hung up or carried.
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predator
C1
/ˈpɹɛd.ə.tɚ/
An animal that hunts and kills other animals for food.
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suspension
C1
/səˈspɛnʃən/
The act of officially stopping something for a time, or the period of this delay.
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twitter
C1
/ˈtwɪtəɹ/
to make a rapid series of light, high-pitched chirping sounds, especially as a bird
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screenplay
C1
/ˈskɹiːnˌpleɪ/
The written script for a film or television show, including dialogue and stage directions.
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weaver
C1
/ˈwi.vɚ/
a craftsman who weaves cloth
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chilly
C1
/ˈtʃɪli/
Cold enough to feel uncomfortable.
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notorious
C1
/nəˈtɔ.ɹi.əs/
Famous for something bad.
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experimental
C1
/ɪkspɛɹəˈmɛntəl/
Relating to or based on scientific experiments.
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torment
C1
/ˈtɔː(ɹ)mɛnt/
Severe physical or mental suffering.
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resent
C1
/ɹiˈzɛnt/
to feel angry or bitter about something you think is unfair
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hydrogen
C1
/ˈhaɪdɹəd͡ʒ(ə)n/
The lightest chemical element (symbol H), a colorless, odorless, highly flammable gas.
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vocal
C1
/ˈvoʊ̯.kəl/
Expressing your opinions openly and forcefully.
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tailor
C1
/ˈteɪlɚ/
A person whose job is to make, repair, or alter clothes, especially suits.
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testament
C1
/ˈtes.tə.mənt/
Proof or clear evidence that something is true or that someone has a quality.
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secrecy
C1
/ˈsiːkɹəsi/
the trait of keeping things secret
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hostess
C1
/ˈhoʊstɪs/
a woman who invites guests and entertains them, especially at her home or an event
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contractor
C1
/ˈkɑːnˌtræktɝ/
A person or company hired to do a particular job under a contract, rather than as a regular employee.
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aggression
C1
/əˈɡɹɛʃən/
Angry or violent behaviour or feelings towards another person.
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amendment
C1
/əˈmɛndmənt/
A change or addition made to a law, document, or formal proposal.
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refreshing
C1
/ɹəˈfɹɛʃɪŋ/
Making you feel cool, fresh, and full of energy again.
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operational
C1
/ˌɑ.pəˈɹeɪ.ʃə.nəl/
Working and ready to be used.
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flatter
C1
/ˈflætɚ/
To praise someone, often insincerely, to please them or win favour.
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descent
C1
/dəˈsɛnt/
The act of moving or coming down.
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specimen
C1
/ˈspɛsɪmɪn/
A single example of something, used to show what the whole group is like.
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advocate¹
C1
/ˈæd.və.kət/
A person who publicly supports or argues for a cause or idea.
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advocate²
C1
/ˈæd.və.keɪt/
To publicly support or recommend a particular idea or course of action.
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inmate
C1
/ˈɪnˌmeɪt/
A person kept in a prison or jail.
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intuition
C1
/ˌɪn.tuˈɪʃ.ən/
The ability to understand or know something immediately, without conscious reasoning.
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spontaneous
C1
/spɑnˈteɪ.ni.əs/
Done suddenly, without planning, because you suddenly want to.
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plumbing
C1
/ˈplʌmɪŋ/
The pipes and fixtures that carry water, gas, or sewage in a building.
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collision
C1
/kəˈlɪʒn̩/
An accident in which two moving objects hit each other.
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revealing
C1
/ɹɪˈvilɪŋ/
Showing or making known something interesting or important.
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recess
C1
/ˈɹiˌsɛs/
A short break from work or activity, such as a pause in a meeting, court session, or school day.
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speculation
C1
/ˌspek.jəˈlæɪ.ʃən/
An opinion or guess formed without firm evidence.
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clinical
C1
/ˈklɪnɪkəl/
Relating to the treatment of patients in a clinic or hospital.
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commence
C1
/kəˈmens/
To begin or start.
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precision
C1
/pɹəˈsəʒ.ən/
The quality of being exact, accurate, and careful.
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titanic
C1
/taɪˈtæn.ɪk/
enormous in size, strength, force, or importance
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tenant
C1
/ˈtɛ.nənt/
A person who pays rent to use land or a building owned by someone else.
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batter
C1
/ˈbætɚ/
To hit something hard and repeatedly.
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successor
C1
/səkˈsɛsɚ/
A person who takes over a job, position, or title from someone else.
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inclined
C1
/ɪnˈklaɪnd/
Having a tendency or willingness to do or believe something.
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solicitor
C1
/səˈlɪsɪtɚ/
In Britain, a lawyer who gives legal advice and prepares legal documents.
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quarry
C1
/ˈk(w)ɔɹ.i/
A large open pit where stone, slate, or sand is dug out of the ground.
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circulation
C1
/ˌsɝkjʊˈleɪʃən/
The movement of blood around the body
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socialist
C1
/ˈsoʊ.ʃə.lɪst/
A person who supports socialism, a system in which the community or government controls how wealth and resources are shared.
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remotely
C1
/ɹɪˈmoʊtli/
From far away, without being physically present.
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commandant
C1
/ˈkɑːmənˌdænt/
the officer in charge of a military unit, fort, camp, school, prison, or district
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transaction
C1
/tɹænˈzækʃən/
An instance of buying or selling something; a business deal.
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ignition
C1
/ɪɡˈnɪʃ.ən/
the process of starting combustion or another self-sustaining energy-producing reaction
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epidemic
C1
/ˌɛpɪˈdɛmɪk/
The fast spread of an infectious disease through a population.
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repent
C1
/ɹɪˈpɛnt/
To feel pain, sorrow, or regret for what one has done or omitted to do; the cause for repenting may be indicated with "of".
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privileged
C1
/ˈpɹɪv(ɪ)lɪd͡ʒd/
Having special advantages, rights, or opportunities that most people do not have.
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pronounced
C1
/pɹəˈnaʊnst/
Very noticeable or strongly marked.
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charter
C1
/ˈt͡ʃɑɹtɚ/
An official document that establishes an organization and sets out its rights and purposes.
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cynical
C1
/ˈsɪnɪkəl/
Believing that people act only out of selfishness and expecting the worst of them.
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purity
C1
/ˈpjʊɹɪti/
the state of being clean and not mixed with anything else
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intriguing
C1
/ɪnˈtɹiːɡɪŋ/
Very interesting because it is strange, mysterious, or unexpected.
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clarity
C1
/ˈklæɹ.ɪ.ti/
The quality of being clear and easy to understand.
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grumpy
C1
/ˈɡrʌm.pi/
easily annoyed, bad-tempered, and inclined to complain
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stretching
C1
/ˈstɹɛt͡ʃɪŋ/
Exercise in which you extend your muscles and limbs to keep them flexible.
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resurrection
C1
/ɹɛzəˈɹɛkʃən/
a revival from inactivity and disuse
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fusion
C1
/ˈfjuːʒən/
The act of joining separate things into one, or the result of doing so.
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chronic
C1
/ˈkɹɑ.nɪk/
(of an illness) Lasting a long time or coming back again and again.
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suicidal
C1
/ˌsu.əˈsaɪ.dəl/
relating to suicide, or experiencing thoughts or intentions of ending one's own life
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withdrawal
C1
/wɪðˈdɹɔ(ə)l/
The act of taking money out of a bank account.
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sexuality
C1
/sɛk.ʃuˈæ.lə.ti/
A person's sexual feelings, attractions, and identity.
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traumatic
C1
/tɹɔˈmætɪk/
Deeply shocking and emotionally painful.
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congregation
C1
/ˌkɑŋɡɹəˈɡeɪʃən/
A group of people gathered together for a religious service.
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credibility
C1
/kɹɛd.əˈbɪ.ɫɪ.ti/
The quality of being believable and trustworthy.
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insensitive
C1
/ɪnˈsɛnsɪtɪv/
Not caring about or noticing other people's feelings.
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initiate
C1
/ɪˈnɪʃ.i.eɪt/
To start or set something in motion.
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