caffeine
noun
Simple meaning
A bitter alkaloid found in coffee and tea that is responsible for their stimulating effects.
Pronunciation
Say it like this:
kafeenSay the bold part a little louder.
IPA pronunciation (US)
kæˈfin
This word is pronounced essentially the same in American and British English, so one transcription covers both.
IPA (International Phonetic Alphabet) is a standard way of writing speech sounds.
Definition
Everyday modern meanings first, grouped by part of speech.
noun
A bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
An alkaloid, C₈H₁₀N₄O₂, found naturally in tea and coffee plants, which acts as a mild stimulant on the central nervous system.
Word Aura™
How this word commonly comes across.
This meaning: A bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
Used this way, caffeine is a reasonably familiar word with a faintly unfavourable edge. It usually sounds natural in a wide range of settings.
- Emotional tone
- Slightly negative
- Formality
- Neutral
- Intensity
- Moderate
- How common
- Moderately common
- Connotation
- Critical or judgemental
- Usage feel
- Neutral and straightforward
Word Aura describes common impressions, not a measurement. Tone changes with sentence, speaker, relationship and situation.
More ways to use caffeine
- “I need some caffeine from coffee to help me wake up in the morning.”noun
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Dictionary data from Wiktionary via the Free Dictionary API. Simple meanings, combinations and word intelligence are built from verified reference data, no AI is used to load this page.