radical
gb/ɹˈædɪkəl/ us/ɹˈædɪkəl/
B1
English
~ 2600
radikális, szélsőséges, király, menő, szabad gyök, gyök, gyökjel
B2
1
radikális
B2
Usage pattern:
[someone/something] is radical
The new leader proposed a radical change to the education system.
Az új vezető radikális változtatást javasolt az oktatási rendszerben.
Her views on environmental policy are considered radical by many.
Sokan radikálisnak tartják a környezetpolitikával kapcsolatos nézeteit.
The company adopted a radical approach to solving the problem.
He made a radical decision to quit his job and travel the world.
This was a radical departure from their usual style.
Learner examples
This is a radical idea.
Ez egy radikális ötlet.
The city needs radical changes.
A városnak radikális változásokra van szüksége.
She has radical plans for the school.
He wants a radical new law.
It was a radical move by the team.
Common mistake:
Learners sometimes confuse 'radical' with 'rad', which is slang for 'cool' and not appropriate in formal contexts.
Meaning
Extreme or far from the usual
Collocations
radical change
|radical reform
|radical idea
|radical approach
|radical solution
Synonyms
extreme (More general and can apply to degree or intensity without implying novelty or change.)
|
revolutionary (Suggests bringing about major change, often political or social.)
Antonyms
moderate (Implies avoiding extremes and preferring gradual change.)
Themes
politics
|society
|change
|core_vocabulary
Definition
Very different from normal or traditional; extreme.
Very different from the usual or traditional; extreme in views, actions, or changes.
NOUN
B2
2
radikális
B2
szélsőséges
B2
Usage pattern:
[someone] is a radical
The radicals in the movement demanded immediate action.
A mozgalom radikálisai azonnali cselekvést követeltek.
He was seen as a radical during his university days.
Egyetemi évei alatt radikálisnak tartották.
Some radicals were arrested during the protest.
The party's radicals opposed the compromise.
She has been labeled a radical for her beliefs.
Learner examples
He is a radical in politics.
A politikában radikálisnak számít.
The group has many radicals.
A csoportnak sok radikális tagja van.
She is called a radical by her friends.
Some radicals want fast change.
Radicals often fight for new ideas.
Meaning
Person with extreme views
Collocations
political radical
|social radical
|left-wing radical
Synonyms
extremist (Often more negative, can imply willingness to use force or violence.)
Antonyms
moderate (Supports gradual change rather than extreme measures.)
Themes
politics
|society
|relationships
Definition
A person who wants big changes in politics or society.
A person who supports thorough or complete political or social reform; someone with extreme views.
B1
INFORMAL
3
Usage pattern:
[something] is radical
That skateboard trick was totally radical!
The concert last night was radical.
Your new bike looks radical!
Learner examples
The movie was radical.
His car is radical.
That game is radical.
Common mistake:
Learners may use this slang in formal situations where it is inappropriate.
Meaning
Excellent or impressive (slang)
Collocations
radical design
|radical performance
Synonyms
awesome (Very informal, similar casual tone.)
|
cool (Informal, common in youth speech.)
Antonyms
lame (Slang for boring or unimpressive.)
Themes
slang
|youth_culture
|communication
|core_vocabulary
Definition
(Slang) Very good or cool.
(Slang) Excellent, impressive, or very appealing.
NOUN
C1
TECHNICAL
4
szabad gyök
C1
gyök
C1
Free radicals can damage cells and lead to aging.
A szabad gyökök károsíthatják a sejteket, és hozzájárulhatnak az öregedéshez.
A hydroxyl radical is highly reactive.
A hidroxilgyök rendkívül reakcióképes.
Chemists study how radicals affect reactions.
Learner examples
Free radicals can harm the body.
A szabad gyökök árthatnak a szervezetnek.
A radical can change other molecules.
Egy szabad gyök más molekulákat is megváltoztathat.
Some radicals react very fast.
Meaning
Group of atoms in chemistry
Collocations
free radical
Themes
science
|chemistry
Definition
(Chemistry) A group of atoms that act together in reactions.
(Chemistry) A group of atoms that behaves as a single unit and takes part in chemical reactions, especially free radicals with unpaired electrons.
NOUN
B2
TECHNICAL
5
gyökjel
B2
In √9, the radical sign indicates a square root.
A √9-ben a gyökjel négyzetgyököt jelöl.
The expression under the radical is 16.
A gyökjel alatti kifejezés 16.
Simplify the radical before solving the equation.
Learner examples
The radical sign means root.
A gyökjel azt jelenti, hogy gyököt kell vonni.
We see a radical in this math problem.
Ebben a matematikai feladatban gyökjelet látunk.
A radical can show a square root.
Meaning
Mathematical root symbol or value
Collocations
square root radical
Themes
mathematics
|education
|science
Definition
(Math) The √ sign or the number under it that shows a root.
(Mathematics) The root symbol (√) or the quantity under it representing a root, especially a square root.
Grammar
Dictionary form
radical
IPA
GB/ɹˈædɪkəl/
US/ɹˈædɪkəl/
Syllables & stress
rad - ic - al (3 syllables)
Stress on 1st syllable (rad)
Word forms
Adjective
- Base: radical
Noun
- Base: radical
- Plural: radicals
Word family
Forms
radicals
noun
Core family
radically
adverb B2
Related words
radicalism
noun
Negative and opposite forms
moderate
adjective B1
Advanced or less common
radicalize
verb
radicalization
noun C1
Expressions
free radical
1/fɹˈi ɹˈædɪkəl/
fixed phrase
technical
Atom/molecule with unpaired electron
An atom or molecule that has an unpaired electron and can react easily.
Examples
- Free radicals can cause damage to cells.
- Antioxidants help neutralize free radicals.
radical change
1/ɹˈædɪkəl t͡ʃˈeɪnd͡ʒ/
fixed phrase
Major and complete transformation
A big and complete change.
Examples
- The country needs a radical change in its energy policy.
- Radical change is necessary to solve the crisis.
radical reform
1/ɹˈædɪkəl ɹɪfˈɔɹm/
fixed phrase
Thorough alteration of system/law
A big and complete change to laws or systems.
Examples
- The education system requires radical reform.
- Radical reform of the tax code is long overdue.