英語で「caffeine」はどう発音する？
ˈkæ.fiːn
KA·feen
第1強勢： KA
実際の動画クリップの中でネイティブが文脈に合わせて「caffeine」を発音するのを聴く
Linguistic Pronunciation Masterclass: “caffeine”
Phonetic mechanics, syllable architecture, and conversational cadence
Syllable Architecture & Stress Distribution
KA
Tense long vowel with sustained acoustic resonance.
feen
Reduced vowel sound, relaxed jaw, and minimal vocal effort.
Primary emphasis falls on the first syllable ("KA"). Raise your pitch and sustain the vowel length on this syllable while relaxing the surrounding syllables.
Common Pronunciation Traps & Learner Mistakes
The Trap: Avoid pronouncing every vowel with full acoustic weight. Non-native speakers often over-enunciate unstressed vowels.
How Native Speakers Say It: Only give full vowel clarity to the primary stressed syllable. Relax all unstressed vowels into a neutral, low-energy schwa (⁄ə⁄).
Connected Speech & Natural Conversational Flow
When followed by a vowel, insert a subtle glide (/w/ or /j/) to connect into the subsequent word without an abrupt glottal stop.
In natural sentences, avoid over-stressing "caffeine" unless it conveys the core contrast or focal point of your message.
Authentic Spoken Quotes from Native Video Context
“Caffeine is a diuretic, so when you drink coffee, all you're doing is actually not adding fluid to the system.”— Native SpeakerWatch clip
“caffeine uh in in in different stance okay so I give some strategies on doing that caffeine effectively is detoxified”— Native SpeakerWatch clip
“caffeine we also need to consider the energy to transport the raw materials the electricity to grind the beans brew”— Native SpeakerWatch clip
“caffeine can make it obviously a little harder to fall asleep caffeine can make it harder to stay asleep”— Native SpeakerWatch clip
“caffeine for a few weeks um I cut out alcohol for a few weeks to get a good”— Native SpeakerWatch clip
“"Caffeine Informer" and a few other publications online deemed us the "world's strongest coffee" with caffeine levels.”— Native SpeakerWatch clip
「caffeine」のスピーキング練習
ネイティブの発音を聞き、マイクに向かってセンテンスを復唱すると、リアルタイムで単語ごとの発音精度スコアが表示されます。
Caffeine is a diuretic, so when you drink coffee, all you're doing is actually not adding fluid to the system.
文脈で聴く: “caffeine”
3,100 件のクリップThe 英語 word “caffeine” is transcribed in the International Phonetic Alphabet (IPA) as ˈkæ.fiːn (phonetic respelling: KA-feen). Phonologically, it consists of 2 syllables (KA · feen), with primary lexical stress placed on the 1st (initial) syllable (KA). Grammatically, “caffeine” functions as a noun. SayItVid indexes 3,100 authentic 英語 video clips demonstrating how native speakers articulate “caffeine” in natural connected speech across American (US: 8 sampled), British (UK), and Australian (AUS) accents.
Spoken Video Transcripts & Contextual Quotes (5 Verified Clips)
- 🇺🇸 USClip #1 · @21:36
“And so you wake up dehydrated. Caffeine is a diuretic, so when you drink coffee, all you're doing is actually not adding fluid to the system. all you're doing is actually not adding fluid to the system.”
- 🇺🇸 USClip #2 · @25:59
“number two is to cycle it so use caffeine uh in in in different stance okay so I give some strategies on doing that caffeine effectively is detoxified okay so I give some strategies on doing”
- 🇺🇸 USClip #3 · @20:05
“if we get serious about measuring the total carbon footprint of each cup of caffeine we also need to consider the energy to transport the raw materials the electricity to grind the beans brew transport the raw materials the electricity to grind the beans brew”
- 🇺🇸 USClip #4 · @49:37
“different ways the first is that for most people caffeine can make it obviously a little harder to fall asleep caffeine can make it harder to stay asleep caffeine can make it harder to stay asleep”
- 🇺🇸 USClip #5 · @28:52
“the slob week experiment where I cut out caffeine for a few weeks um I cut out alcohol for a few weeks to get a good alcohol for a few weeks to get a good”
意味と定義: “caffeine”
- An alkaloid, C₈H₁₀N₄O₂, found naturally in tea and coffee plants, which acts as a mild stimulant on the central nervous system.
動画内の例文 (3)
- “For example, 0.100 grams of caffeine yield by combustion, by weight, 0.180 grammes of carbonic acid.”
- “Caffeine is a diuretic, so when you drink coffee, all you're doing is actually not adding fluid to the system.”
- “caffeine uh in in in different stance okay so I give some strategies on doing that caffeine effectively is detoxified”
よく使われるフレーズ・コロケーション
発音: “caffeine”
- Pronunciation:
- KA-feen
- 音節:
- KA · feen
- Written Hyphenation:
- caf · feine
- 第1強勢：
- KA
- IPA:
- ˈkæ.fiːn
- 文脈で聴く
- caffeine
押韻・ライミングワード： “caffeine”
-æfin発音が全く同じ単語（同音異義語）
固有の発音「caffeine」 (⁄ˈkæ.fiːn⁄) には一般的な語彙において同音異義語がありません。
「caffeine」に関するよくある質問
「caffeine」の英語の発音は？
「caffeine」の発音記号は ⁄ˈkæ.fiːn⁄ (KA-feen) です。上のネイティブ動画クリップを再生して、実際の会話におけるリアルな発音を聞いてみましょう。
「caffeine」の音節（シラブル）数はいくつですか？
「caffeine」には 2 つの音節があります：KA · feen。
「caffeine」のアクセント（強勢）はどこですか？
「caffeine」の第1強勢（主アクセント）は「KA」にあります。動画内の強勢の置かれ方に注目して聴いてみてください。
「caffeine」の意味は何ですか？
An alkaloid, C₈H₁₀N₄O₂, found naturally in tea and coffee plants, which acts as a mild stimulant on the central nervous system.
「caffeine」が実際に使われている文を聞くには？
このページには、字幕付きの動画例文が 3100 件収録されています。「前へ / 次へ」（または矢印キー ← / →）を使って発音される瞬間をピンポイントで再生できます。
What is the most common pronunciation mistake when saying “caffeine”?
Avoid pronouncing every vowel with full acoustic weight. Non-native speakers often over-enunciate unstressed vowels. Only give full vowel clarity to the primary stressed syllable. Relax all unstressed vowels into a neutral, low-energy schwa (⁄ə⁄).