radical

• 指非常新颖、与传统或常规截然不同的；也可指根本性的或极端的改变。

Describes something that is very new and different from what is traditional or ordinary; can also refer to fundamental or extreme changes.

1. Extreme or thoroughB2formal

   Relating to or affecting the fundamental nature of something; far-reaching and thorough.

   激进的

   • The company underwent a radical restructuring.
   • She proposed a radical change to the education system.
   • The new policy represents a radical departure from tradition.

   同义词completedrasticextensivefundamentalprofoundsweepingthorough

   反义词conservativegradualincrementalmildmoderatesuperficial

2. Very different from the usualB2formal

   Departing markedly from the usual or customary; extreme or drastic.

   激进的

   • His radical ideas challenged the status quo.
   • The artist's radical style shocked the critics.
   • They took a radical approach to solving the problem.

   同义词drasticextremeprofoundrevolutionarysweepingthoroughgoing

   反义词conservativeconventionalmainstreammoderatetraditional

3. Excellent or coolA2slangamerican

   Slang term meaning very good, excellent, or impressive.

   酷

   • That skateboard trick was totally radical!
   • The party last night was radical.
   • He's got a radical new haircut.

   同义词awesomecooldopeexcellentgnarlygroovysicksweettubularwicked

   反义词awfullamemediocreterribleuncool

• 名词，指主张极端或根本性的政治、社会或经济变革的人，也指化学中作为整体参与反应的原子团。

A noun referring to a person who advocates for extreme or fundamental political, social, or economic change, or a group of atoms in chemistry that acts as a unit in reactions.

1. Person with extreme viewsB2formal

   A person who advocates for extreme or fundamental changes in society, politics, or other systems.

   激进分子

   • The radical was arrested for inciting violence.
   • Many radicals called for a complete overhaul of the government.
   • He was known as a radical in the student movement.

   同义词extremistfanaticinsurgentmilitantreformerrevolutionarysubversivezealot

   反义词conservativemoderatereactionarytraditionalist

2. Chemical groupC1formalscientific

   An atom or group of atoms with at least one unpaired electron, highly reactive.

   自由基

   • Free radicals can damage cells and contribute to aging.
   • The reaction produces a hydroxyl radical.
   • Antioxidants neutralize harmful radicals in the body.

   同义词free radical

3. Root or foundationC2formal

   The fundamental or original part of something.

   根本

   • The radical of the problem lies in poor communication.
   • In linguistics, the radical is the base form of a word.
   • The radical of the equation was difficult to solve.

   同义词basebasisfoundationfundamentaloriginrootsource

   反义词consequencederivativeoffshootoutgrowth