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📕 rednote ID(小红书号)：3881567312

Keen Meaning: Enthusiastic, Sharp, and Usage Tips (2 meaning)

Meaning 1：enthusiastic (keen)

keen 🔊

/kiːn/

adj.

very interested in and excited about something; really wanting to do something.

enthusiastic 🔊

➕

/ɪnˌθjuːziˈæstɪk/

adj.

Showing strong interest or eagerness; wanting to participate or learn.

📁 Category：School Education 🔖 Level：elementary

📘 Details & Usage

📖 Root Explanation

Old English 'cene' (bold) → mental sharpness. Cognate with German 'kühn'.

💡 Mnemonic

Think of a 'keen' knife: it cuts through doubts like a sharp mind cuts through problems.

📖 Example

The children were keen to try out the new interactive exhibit at the science museum. 🔊 The children were enthusiastic to try out the new interactive exhibit at the science museum.

🔗 Collocations

keen interest – strong curiosity or eagerness

keen to learn – eager to acquire knowledge

keen observer – someone who notices details carefully

🔄 Synonyms

eager (adj.) – showing strong desire or impatience

enthusiastic (adj.) – having intense enjoyment or interest

avid (adj.) – having a strong liking or desire, often for a hobby

🚫 Antonyms

indifferent (adj.) – having no interest or concern

apathetic (adj.) – showing no emotion or interest

reluctant (adj.) – unwilling or hesitant

🌱 Derivatives

keenly (adv.) – in a keen manner; eagerly or sharply

keenness (n.) – the quality of being keen

📖 Cultural Story

Originally 'bold' in Old English. Shift to 'sharp' (knife, mind) by 13th century. 'Keen interest' dates to 18th century. Example of semantic broadening from physical to abstract.

Meaning 2：sharp (keen)

keen 🔊

/kiːn/

adj.

having a very sharp edge or point; (of mind or senses) very quick and sensitive.

sharp 🔊

➕

/ʃɑːrp/

adj.

Having a fine edge or point; also used for senses or mind that are quick and precise.

📁 Category：Objects & Materials 🔖 Level：intermediate

📘 Details & Usage

📖 Example

Make sure you use a keen knife to slice the tomatoes, or they will get crushed. 🔊 Make sure you use a very sharp knife to slice the tomatoes, or they will get crushed.

🔗 Collocations

keen blade – a very sharp knife edge

keen eyesight – very good vision, able to see details clearly

keen mind – intelligent and quick-thinking

🔄 Synonyms

sharp (adj.) – having a thin edge or point that can cut easily

acute (adj.) – very perceptive or sensitive; (of an angle) less than 90 degrees

penetrating (adj.) – able to cut through; insightful

🚫 Antonyms

dull (adj.) – not sharp; blunt

blunt (adj.) – not having a sharp edge or point

obtuse (adj.) – slow to understand; not sharp

🌱 Derivatives

keenly (adv.) – in a keen manner; eagerly or sharply

keenness (n.) – the quality of being keen