One syllable: coin.
koyn
/kɔɪn/
coin is pronounced koyn (/kɔɪn/). It has one syllable (coin), with the stress on "coin". Coin refers to a small, flat, typically round piece of metal minted as money. It also serves as a verb meaning to invent or contrive something, especially a new term or phrase. In everyday use, it denotes currency and value, with subtle nuances in formal contexts and slang. The core meaning centers on a minted monetary unit and the action of creating terms or wealth.
Coin refers to a small, flat, typically round piece of metal minted as money. It also serves as a verb meaning to invent or contrive something, especially a new term or phrase. In everyday use, it denotes currency and value, with subtle nuances in formal contexts and slang. The core meaning centers on a minted monetary unit and the action of creating terms or wealth.
"She saved every coin she found on the street."
"The phrase has been coiled into modern slang to coin a new term."
"He flipped a coin to decide who goes first."
You pronounce coin as /koɪn/ in US and UK, with a single syllable that blends the /k/ plosive into an elongated diphthong /ɔɪ/ plus the nasal-free /n/. Start with the /k/ release, glide into the /ɔɪ/ sequence, and finish with a light /n/. The tongue starts high-back for /k/, then moves to mid-central for /ɔɪ/; keep lips neutral, with a slight rounding into the diphthong. Listen for a tight, compact release rather than a long, open vowel.
Two common errors are overpronouncing the vowel as /aɪ/ or breaking it into two distinct syllables. Another mistake is adding an extra vowel sound before /n/, yielding something like /koɪ.ən/ in rapid speech. To correct: keep the vowel as a tight /ɔɪ/ glide, compress the /ɔɪ/ into a single syllable, and end with a clear but short /n/. Minimal adjustments to tongue height and lip rounding help maintain the natural length of the diphthong.
In US English, /koɪn/ is rhotic and the /r/ is not involved; the /k/-to-/ɔɪ/ glide is prominent, with a compact vowel. In UK English, /kɔɪn/ often has a slightly lower starting vowel and crisper /k/ release, but still uses /ɔɪ/. Australian English generally mirrors /kɔɪn/ with a subtle vowel quality shift toward a more centralized /ɔɪ/ and a longer, possibly glided ending. Across accents, the key difference lies in vowel height and diphthong realization rather than consonant placement.
The challenge is the tight, rapid diphthong /ɔɪ/ that blends a rounded lip position with a rising tongue that starts mid-back and moves toward high-front. This transition can be difficult for speakers whose native vowels don’t include a similar glide. Additionally, many learners have a tendency to insert an extra syllable or misplace the tongue for /k/ or /n/, creating /ko.ɪn/ or /koɪn/ with a lag between sounds. Focused practice on the smooth /ɔɪ/ transition and a clean /k/ release will help.
Focus on the one-syllable unit: /koɪn/. Start with a short, firm /k/ release, then smoothly transition into /ɔɪ/ without pausing, and end with a light /n/. Visualize your mouth forming a tight rounded lip shape for /ɔɪ/ and keep the tongue relaxed as you glide. Practicing with a phrase like “a coin toss” helps stabilize the rhythm and ensures the /ɔɪ/ sound remains compact within the single syllable.
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Coin derives from the Latin compund verb coinire, meaning to come together, but its direct lineage runs through the Old French coin and the Middle English coin, which denoted a minted piece of metal. The term coin originally implied the act of shaping metal to form a monetary unit, often with imagery of a die or stamp. The earliest coins emerged around 7th century BCE in Lydia (modern Turkey), subsequently spreading to Greece and Rome, where the monarch or state issued standardized metal discs. In English, coin as a noun for money and as a verb meaning to invent terms developed during the Middle English to Early Modern English period, aligning with the rise of minted currency and the expansion of vocabulary for language creation. The word’s semantic trajectory shows a shift from the physical object to the act of creation (to coin a term). Its historical uses reflect economic and linguistic innovation, with the first known written attestations of coin appearing in legal and monetary documents from late antique Latin and medieval French adaptations, solidifying its dual function in English discourse.
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💡 These words have similar meanings to "coin" and can often be used interchangeably.
🔄 These words have opposite meanings to "coin" and show contrast in usage.
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Words that rhyme with "coin"
-oin sounds
Practice with these rhyming pairs to improve your pronunciation consistency:
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