radical

[ˈrædɪkəl]

Origin

From Late Latin radicalis ("of or having roots"), from Latin radix ("root")

Definitions

1. (adj.) Fundamental, far-reaching, thorough

   • "The new policy brought radical changes to the education system."
   • "We need radical solutions to address climate change."

2. (adj.) Favoring extreme changes in social or political matters

   • "He was known for his radical political views."
   • "The radical group demanded complete reform of the government."

3. (n.) A person who advocates fundamental or revolutionary changes

   • "She was seen as a radical in the conservative community."
   • "Political radicals often face opposition from traditionalists."

4. (n.) Chemistry: An atom or group of atoms that maintains its identity through various reactions

   • "Free radicals can damage cells in the body."

Word Forms

• radically (adv.)
• radicalism (n.)
• radicalize (v.)
• radicalization (n.)

Synonyms

• fundamental
• extreme
• revolutionary
• profound
• drastic
• far-reaching

Memory Tips

1. Think of "RAD" (meaning excellent/extreme) + "ICAL"
2. Connect to "root" (its Latin origin) - radical changes go to the root of things
3. Picture a tree's roots (radical = root) completely transforming the ground - representing fundamental change

Usage Notes

Often carries a strong connotation, either positive (thorough, fundamental) or negative (extreme, militant), depending on context. In political contexts, usually implies extreme departure from tradition or norm.