caffeine
English · Thesaurus
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caffeine
- /ˈkæfiːn/
- /kæˈfiːn/
Rhymes with -æfiːn, -iːn
Where it comes from
Borrowed from French caféine, from café (“coffee”), or German Caffein, Kaffein (cp. Coffein, Koffein), from Kaffee (“coffee”) (cp. Kaffe, Koffee, Koffe), or Italian caffè (“coffee”) + -ine.
noun caffeines · caffein
- An alkaloid, C₈H₁₀N₄O₂, found naturally in tea and coffee plants, which acts as a mild stimulant on the central nervous system. For example, 0.100 grams of caffeine yield by combustion, by weight, 0.180 grammes of carbonic acid.
Thesaurus
Closest in meaning: caffein, coffee, coffeemaker, cafe, café, benzoate, citrated, guaranine, mateine, trimethylxanthine, theine, buzz, java, joe, methyltheobromine, methylxanthine
Translations
Every language
noun alkaloid found naturally in tea and coffee plants
| Español | cafeína |
|---|---|
| 한국어 | 카페인 kapein |
| 日本語 | カフェイン kafein |
| 中文 | 咖啡因 kāfēiyīn, 咖啡鹼 /咖啡碱 kāfēijiǎn |
| हिन्दी | कैफ़ीन kaifīn, कैफीन kaiphīn |
| Kiswahili | kafeini |
| Português | cafeína |
| Français | caféine |
| Deutsch | Koffein, Coffein |
| Italiano | caffeina |
| Ελληνικά | καφεΐνη kafeḯni |
| Română | cafeină, cofeină |
| Русский | кофеи́н kofeín |
| Tiếng Việt | cafêin, cà phê tinh, caffein |
| العربية | كَافِيِين kāfiyīn |
| עברית | קָפֶאִין kafeín |
Talk about this word "caffeine." Wiktionary, via Micwyn, micwyn.com/word/caffeine. Accessed 6 Nov. 2026. caffeine. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/caffeine "caffeine." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/caffeine.Cite this
@misc{caffeine_2026,
title = {caffeine},
howpublished = {Wiktionary, via Micwyn},
year = {2026},
url = {https://micwyn.com/word/caffeine},
urldate = {2026-11-06}
}
