pruh-LAWNG
/pɹəˈlɔŋ/
prolong is pronounced pruh-LAWNG (/pɹəˈlɔŋ/). Prolong is a verb meaning to extend the duration of something beyond its usual or planned length. It implies making an event, action, or condition last longer than expected, often through effort or deliberate action. The term is commonly used in formal or technical contexts and can carry a sense of persistence or extension over time.
Prolong is a verb meaning to extend the duration of something beyond its usual or planned length. It implies making an event, action, or condition last longer than expected, often through effort or deliberate action. The term is commonly used in formal or technical contexts and can carry a sense of persistence or extension over time.
- You may over-compress the second syllable, yielding a weak /lɔŋ/; fix by keeping a distinct nucleus /ɔː/ or /ɒ/ and an audible /l/ onset leading into the /ŋ/. • Practice by saying pro- with a short, controlled /o/ then clearly moving to /lɔːŋ/ or /lɒŋ/; don’t let the second vowel melt into the /r/ or /l/. - Confusing the r sounds in US vs UK; US rhotics keep a yod-like off-glide to the /r/ in the first syllable; UK/AU are non-rhotic, so the /r/ disappears in the first syllable; maintain the correct vowel quality before the /l/. - Final nasal can blend with previous sounds in rapid speech; ensure the /ŋ/ is a clean, velar nasal with full contact of the tongue tip to the alveolar ridge and the back of the tongue touching the soft palate.
"The manager asked staff to prolong the meeting to address all remaining questions."
"To prolong the experiment, researchers adjusted the protocol and collected additional data."
"They tried to prolong the effect of the medication by taking it at regular intervals."
You pronounce it pro-long with two syllables: /proˈlɔːŋ/ (US) or /prəˈlɒŋ/ (UK/AU). The primary stress falls on the second syllable: pro-LONG. In careful speech the vowels are distinct: the first /o/ or /ə/ depending on accent, the second is the long /ɔː/ or /ɒ/; the final sound is the velar nasal /ŋ/. Slide your tongue back for /ɔː/ or /ɒ/ and keep the tip of the tongue raised toward the alveolar ridge for the /l/ before the /ɔː/.”
Common errors include reducing the second syllable to a quick /lɒŋ/ or /lɔŋ/ without clear vowel length, and misplacing stress to pro- instead of pro- LONG. Some non-native speakers blend it into a single syllable (/ˈprolɔːŋ/) by not clearly enunciating the second vowel, or replace /l/ with a flap when rapidly spoken. To correct: ensure the second syllable carries the strong /lɔː/ or /lɒ/ nucleus with a distinct /ŋ/ at the end, and keep primary stress on LONG. Practice by isolating /pro/ and /lɔŋ/ with a pause before the last syllable.
In US English, you’ll hear /proˈlɔːŋ/ with a dark /l/ and a clear, longer /ɔː/ vowel; the second syllable bears the main stress. UK English often uses /prəˈlɒŋ/ with a shorter first vowel and a crisper /ɒ/; non-rhoticity means the r-like quality is weaker before the vowel. Australian English tends to /prəˈlɔːŋ/ with a flatter initial schwa and a broad /ɔː/; the final /ŋ/ remains. Across all, the key is a distinct second syllable nucleus and a final nasal.
The difficulty lies in the two-syllable cadence with distinct nucleus in the second syllable, plus a final velar nasal /ŋ/ that can blur with the preceding /ɔː/ or /ɒ/. English learners often misplace stress or fuse /pro/ with the second syllable, producing /ˈprolɒŋ/ or /ˈproːlɔŋ/. To master: separate the two syllables clearly while maintaining a full vowel in the second; ensure the tongue arcs to produce the /l/ before the nasal, and finish with a crisp /ŋ/. IPA cues: US /proˈlɔːŋ/, UK /prəˈlɒŋ/, AU /prəˈlɔːŋ/.
One distinctive aspect is the interplay of the /o/ vowel in the first syllable with the second-syllable /ɔː/ or /ɒ/. In many speakers, the first syllable is reduced to /pro/ with a shorter vowel in casual speech, but careful diction calls for a lightly raised vowel before the /l/ to avoid forming /prəˈlɔːŋ/ that sounds like prolongation of the first syllable rather than the second. Maintaining a crisp second-syllable nucleus helps avoid ambiguity between emphasis on pro- and -long.
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- US: emphasize /ˈproʊ/ or /proˈlɔːŋ/? In American English, you typically hear /proˈlɔːŋ/ with a stressed second syllable and a pronounced /ɔː/; keep the /r/ sound in the first syllable and a strong nasal end. - UK: /prəˈlɒŋ/ with a reduced first vowel; avoid coloring the first vowel as a long /oʊ/; ensure the /ɒ/ is short and open; non-rhotic r in the first syllable. - AU: /prəˈlɔːŋ/ similar to UK but with a slightly more centralized or centralized /ə/ in the first syllable; the second vowel remains broad /ɔː/; /ŋ/ is clear. IPA references: US /proˈlɔːŋ/, UK /prəˈlɒŋ/, AU /prəˈlɔːŋ/.
Prolong comes from the Middle French prolonger, and from the Latin prolongare: pro- ‘forward, forth’ + longus ‘long.’ The word entered English via culinary and legal translation lines in the late 16th century, initially in contexts implying forward extension of a duration or period. The sense evolved to cover both literal extension of time and figurative extension of effects or influence. In early usage, prolong was more neutrally about duration; by the 19th and 20th centuries, it found common place in formal writing and technical discourse (including medicine, law, and science) to indicate deliberate extension beyond standard limits. The core meaning centers on adding length or time, rather than shortening or reducing. First known uses appear in bilingual French-English legal and administrative texts, with later widespread adoption in general English. The evolution reflects a general preference in English for the prefix pro- to denote forward movement or enhancement, paired with long, to signal duration. This combination has remained stable through modern usage, including everyday prose and specialized documentation.
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💡 These words have similar meanings to "prolong" and can often be used interchangeably.
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Words that rhyme with "prolong"
-ong sounds
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