2 syllables: boil, ing. Stress on boil.
BOY-ling
/ˈbɔɪlɪŋ/
boiling is pronounced BOY-ling (/ˈbɔɪlɪŋ/). It has two syllables (boil-ing), with the stress on "boil". Boiling refers to the process of heating a liquid until it reaches the boiling point and bubbles form and rise rapidly. It can describe the state of a liquid at high temperature or a situation becoming extremely heated or tense. The term is commonly used in cooking, chemistry, and informal English to indicate intense heat or agitation.
Boiling refers to the process of heating a liquid until it reaches the boiling point and bubbles form and rise rapidly. It can describe the state of a liquid at high temperature or a situation becoming extremely heated or tense. The term is commonly used in cooking, chemistry, and informal English to indicate intense heat or agitation.
- Mispronounce / ɔɪ / as a shortened / ɒ / or / oʊ /; correction: keep the diphthong moving from /ɔ/ to /ɪ/ while maintaining a clear boundary before the /l/ onset. - Overemphasize the /l/ in the second syllable, making it sound like /lɪn/; correction: keep the tongue tip light and allow the /l/ to be a small, clear onset rather than a heavy consonant. - Nasalize the final /ŋ/ or replace it with /ŋk/; correction: end the word with a clean velar nasal /ŋ/, with the back of the tongue raised toward the soft palate.
"The pot is boiling, so reduce the heat to prevent overflow."
"Water boils at 100°C (212°F) at sea level."
"Temperatures rose during the debate, and the discussion started boiling over."
Boiling is /ˈbɔɪ.lɪŋ/ in UK English or /ˈbɔɪ.lɪŋ/ in US English; in many American pronunciations the first vowel can sound like /ɔɪ/ with a rounded openness. The primary stress is on the first syllable: BOY-ling. Your mouth starts with a mid-back rounded vowel for /ɔ/ or a close-mid back vowel, followed by /ɪ/ in the second syllable. Try saying BOY as in “boy” and then add a light “ling.” You can listen to native examples on Pronounce or YouGlish to hear natural rhythm and flanking consonants.
Common mistakes include reducing /ɔɪ/ to a dull /o/ or /ɐɪ/ in the first syllable, and over-syllabicating the second syllable as /ˈbɔɪ.lɪŋ/ vs the natural /ˈbɔɪ.lɪŋ/. Another error is misplacing the /l/ in the onset of the second syllable or turning the /ŋ/ into a hard n. Correct by practicing the /ɔɪ/ diphthong with a smooth glide from /ɔ/ to /ɪ/ without breaking the first syllable, and keep the /l/ light and the final /ŋ/ velar nasal with a relaxed tongue tip.
In US and UK, the first syllable bears strong /ɔɪ/ with the typical rhoticity affecting surrounding vowels in some dialects. US speakers often have a slightly more rounded /ɔɪ/ and a fused /l/ with the following vowel; UK non-rhotic accents may have a clearer /l/ in some regions. Australian pronunciation tends to be even more centralized for /ɔɪ/ and may feature a more open /ɪ/ in the second syllable. Overall, stress remains on the first syllable in all three varieties, with subtle timing differences in the second syllable.
The difficulty lies in producing the /ɔɪ/ diphthong accurately while keeping the /l/ light and the final /ŋ/ clear. Some speakers taper the /ɔɪ/ too quickly, producing a more monophthong-like vowel, while others nasalize or misarticulate the /l/ so it blends with the following vowel. Achieve precision by sustaining the /ɔɪ/ glide, ensuring the mouth starts with a rounded lip position, and keeping the tongue tip touching the alveolar ridge only briefly before releasing into /l/ and the velar /ŋ/.
A distinctive aspect is the crisp separation and timing between /ɔɪ/ and /l/; some speakers merge the /l/ with the glide, making the word sound like /ˈbɔɪlɪŋ/ or /ˈboʊlɪŋ/. Focus on boundary: end the first syllable with a clean stop, then gently attach the /l/ to the onset of the second syllable before releasing into /ŋ/. Practicing with minimal pairs like “coil/coal” helps isolate the /ɔɪ/ quality and /l/ onset in context.
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The adjective boiling comes from the verb boil, which traces back to Old English boltian or bawlan, related to Dutch boilen and German sieden, all connected to the sense of bubbling or bubbling up. The noun form boiling emerged in the early modern period to denote the action or process of boiling liquid. Over time, metaphorical uses widened to describe anything in a heated or highly agitated state. The core semantic field—heat, bubbling, dynamic movement—remained stable, while the word broadened to describe emotional or figurative intensity, such as a boiling pot or a boiling pot of controversy. First known uses appear in Middle English medical and culinary texts, where boiling referenced both culinary preparation and medicinal decoctions. By the 17th–18th centuries, the term had become common in everyday speech, retaining its literal meaning while expanding to figurative contexts like “boiling with anger.” The word’s etymology reflects a Indo-European root shared with many Germanic languages that denote bubbling or intense heat, illustrating a close tie between physical heat and expressive intensity in English development.
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💡 These words have similar meanings to "boiling" and can often be used interchangeably.
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Words that rhyme with "boiling"
-ing sounds
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