B2 adjective Neutral

radical

/ˈrædɪkəl/

Relating to or affecting the fundamental nature of something; far-reaching or thorough. It often describes changes, ideas, or actions that represent a complete departure from tradition or the status quo.

Examples

3 of 5
1

Switching to a vegan diet was a radical change for someone who loved steak.

Changing to a plant-based diet was a very big and fundamental change for a meat-lover.

2

The government is considering radical reforms to the healthcare system.

The government is looking at making very deep and complete changes to how healthcare works.

3

That new trick you did on your bike was totally radical!

That new move you performed on your bicycle was extremely cool and impressive!

Word Family

Noun
radicalism
Verb
radicalize
Adverb
radically
Adjective
radical
Related
radical
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Memory Tip

Think of a 'radish.' Both words come from the Latin 'radix,' meaning 'root.' A radical change goes all the way down to the roots.

Quick Quiz

The scientists proposed a ______ new way of capturing solar energy that could replace all fossil fuels.

Correct!

The correct answer is: radical

Examples

1

Switching to a vegan diet was a radical change for someone who loved steak.

everyday

Changing to a plant-based diet was a very big and fundamental change for a meat-lover.

2

The government is considering radical reforms to the healthcare system.

formal

The government is looking at making very deep and complete changes to how healthcare works.

3

That new trick you did on your bike was totally radical!

informal

That new move you performed on your bicycle was extremely cool and impressive!

4

Copernicus proposed a radical theory that the Earth revolves around the sun.

academic

Copernicus suggested a revolutionary idea that the Earth orbits the sun instead of being the center.

5

To save the company from bankruptcy, the board suggested a radical downsizing.

business

To keep the business from failing, the directors proposed a very extreme reduction in staff and costs.

Word Family

Noun
radicalism
Verb
radicalize
Adverb
radically
Adjective
radical
Related
radical

Common Collocations

radical change a fundamental or extreme shift in direction
radical ideas thoughts that challenge the established way of thinking
radical reform complete and thorough improvement of a system
radical departure a complete change from what was done before
radical transformation a total and deep change in form or appearance

Common Phrases

radical rethink

a complete reassessment of a situation or plan

radical transparency

a management style where all information is shared openly

radical surgery

an intensive medical operation or a metaphor for extreme corrective measures

Often Confused With

radical vs drastic

Drastic emphasizes the severity or violence of an effect, while radical emphasizes going to the 'root' or fundamental cause.

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Usage Notes

In modern English, 'radical' is often used neutrally in business or science to mean 'fundamental,' but it can carry a negative connotation in politics if it implies extremism.

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Common Mistakes

Learners often limit 'radical' to political contexts, but it is frequently used to describe technology, medicine, and personal lifestyle changes.

💡

Memory Tip

Think of a 'radish.' Both words come from the Latin 'radix,' meaning 'root.' A radical change goes all the way down to the roots.

📖

Word Origin

From the Late Latin 'radicalis,' meaning 'of or pertaining to the root.'

Grammar Patterns

Used primarily as an attributive adjective (e.g., 'a radical solution'). Can be used as a noun to refer to a person with extreme views.
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Cultural Context

In 1980s American youth culture, 'radical' (often shortened to 'rad') became a popular slang term for 'excellent' or 'awesome.'

Quick Quiz

The scientists proposed a ______ new way of capturing solar energy that could replace all fossil fuels.

Correct!

The correct answer is: radical

Related Words

intrabrevsion

C1

A technical or linguistic term referring to the internal abbreviation or condensation of information within a specific system or document. It describes the act of shortening components for internal efficiency while maintaining the integrity of the overall structure.

prevalor

C1

To prove superior in power, influence, or frequency within a specific context. It describes a situation where one principle, opinion, or force becomes dominant over others.

ultrajuncter

C1

Describing something that exists beyond a standard point of connection or is characterized by an extreme degree of integration between disparate parts. It is typically used in specialized contexts to denote systems, theories, or structures that bridge multiple complex networks simultaneously.

macrosanctible

C1

A large-scale system, institution, or conceptual framework that is regarded as inviolable and beyond criticism due to its perceived sacredness or fundamental importance. It typically refers to entities that are protected from alteration or scrutiny because of their massive cultural or structural status.

uncedate

C1

A formal and technical noun referring to a state or instance where a claim, territory, or right has not been yielded or surrendered. It describes the preservation of original status or possession despite pressure to concede or transfer control.

anvention

C1

To systematically modify or adapt an existing concept or object into a new form, particularly within a controlled environment or set of parameters. This verb describes the process of innovating by bridging the gap between rigorous analysis and creative invention.

semiliberness

C1

To exist in or grant a state of partial liberty or restricted autonomy. It describes the act of functioning within a framework that provides some freedom while maintaining significant oversight or control.

cosolvment

C1

Describing a substance or factor that acts in conjunction with another to facilitate the process of dissolving a solute or resolving a complex situation. In technical contexts, it refers to an auxiliary agent that enhances the solubility of a primary solvent system.

unaudless

C1

Describing something that is completely devoid of sound or impossible to hear. It is often used in literary or technical contexts to emphasize a profound state of silence or a lack of auditory signature.

monosomnful

C1

A noun referring to the physiological or habitual state of experiencing only one continuous, uninterrupted period of sleep within a twenty-four-hour cycle. It describes the quality of a monophasic sleep pattern where rest is concentrated into a single block without supplemental naps.

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