radical

抜本的な、根本的な

物事の基本的な性質に大きく影響する。

やさしい英語で： Affecting the basic nature of something in a very large or important way.

• The house needs radical changes.
• Their plans represent a radical shift in policy.
• We proposed a radical overhaul of the system.

類義語： fundamental, drastic, major

反対語： minor, superficial

よく使う表現： radical change, radical reform, radical difference

斬新な、革新的な

広く認められた考えや、いつものやり方と大きく異なる。

やさしい英語で： Very different from accepted ideas or usual ways of doing things.

• Her idea seemed radical at first.
• The architect proposed a radical new design.
• Would a more radical approach solve the problem?

類義語： unconventional, innovative

反対語： conventional

よく使う表現： radical idea, radical approach, radical design

急進的な

社会や制度の基本的な決まりや仕組みを変えることを支持する。

やさしい英語で： Supporting changes to the basic rules or organization of society or another system.

• He holds radical political views.
• The radical party demanded a new system of government.
• Her beliefs became more radical over time.

類義語： revolutionary

反対語： conservative

よく使う表現： radical beliefs, radical movement, radical politics

徹底的な、広範な

広範囲にわたり、全体または多くの部分に徹底して及ぶ。

やさしい英語で： Extensive and thorough, affecting all or many parts of something.

• The disease required radical treatment.
• Radical surgery removed the entire affected organ.
• They considered whether a less radical procedure would work.

類義語： thorough, far-reaching, extensive

反対語： limited

よく使う表現： radical surgery, radical treatment, radical removal

根の、語根の、根号の

植物の根、単語の語根、数の根に関係する。

やさしい英語で： Connected with the root of a plant, word, or number.

• The plant has several radical leaves.
• Students learned to simplify radical expressions.
• The radical element remains when the word ending is removed.

よく使う表現： radical leaves, radical expression, radical element

最高の、すごい

とてもよく、わくわくさせたり強い印象を与えたりする。

やさしい英語で： Extremely good, exciting, or impressive.

• That trick was radical!
• We caught some radical waves yesterday.
• Your new board looks radical, dude.

類義語： awesome, cool, great

反対語： awful

よく使う表現： radical trick, radical ride, radical outfit

急進派、急進主義者

社会の大きな変革を支持する人や、多数派と大きく異なる考えを持つ人。

やさしい英語で： Someone who supports major changes to society or holds views very different from most people.

• He was a radical in his youth.
• The radicals called for major political changes.
• Moderates and radicals disagreed about the next step.

類義語： revolutionary

反対語： conservative

よく使う表現： political radical, young radical, left-wing radical

ラジカル、遊離基

対になっていない電子を持ち、反応しやすいことが多い原子や原子の集まり。

やさしい英語で： An atom or group of atoms with an electron that has no partner, often making it react easily.

• The reaction produced a radical.
• Free radicals can react with nearby molecules.
• Each radical has at least one unpaired electron.

類義語： free radical

よく使う表現： free radical, radical reaction, oxygen radical