4 syllables: Hi, la, ri, ous. Stress on la.
hil-ER-ee-uhs
/hɪˈlɛɹiəs/
Hilarious is pronounced hil-ER-ee-uhs (/hɪˈlɛɹiəs/). It has four syllables (Hi-la-ri-ous), with the stress on "la". Hilarious is an adjective meaning extremely funny or causing great amusement. It describes something that provokes loud laughter or joyful hilarity. The term conveys a lighthearted, entertaining quality and is often used to praise jokes, situations, or performances that are witfully amusing and highly entertaining.
nounHilarious is an adjective meaning extremely funny or causing great amusement. It describes something that provokes loud laughter or joyful hilarity. The term conveys a lighthearted, entertaining quality and is often used to praise jokes, situations, or performances that are witfully amusing and highly entertaining.
How to Pronounce Hilarious
"That comedian’s improvised antics were absolutely hilarious."
"We watched a movie last night and the dialogue turned out to be downright hilarious."
"Her goofy mispronunciations in the video were surprisingly hilarious to the audience."
Hilarious is pronounced /hɪˈleɪr.i.əs/ in US and UK IPA, with three distinct syllables (hi-LA-ree-us). The primary stress falls on the second syllable, ‘LA,’ and the final -ous is pronounced as /əs/. For US speakers, the middle vowel often sounds like /eɪ/ as in ‘lay,’ and the final /ɪ.əs/ can be produced as a quick schwa + /s/ or a lighter /ɪəs/ depending on speed. Mouth posture emphasizes a light jaw drop for the first syllable and a more taut, voiced onset in the second syllable.
Common errors include misplacing stress (pronouncing hi-LA-rious with stress on the first or third syllable) and mispronouncing the middle vowel as /ɪ/ or /i/ instead of the /eɪ/ diphthong. Another frequent issue is slurring the final /əs/ into /əs/ or /əs/ as a pure /s/. To correct: practice the two-phoneme middle diphthong /eɪ/ by starting with a light 'eh' then glide to 'ay' as in lay, ensure the /r/ is clearly articulated in American accents, and finish with a crisp /əs/ or /əs/ without turning into a vowel sound.
In US English, stress remains on the second syllable, with a rhotic /r/ and a pronounced /ɪ/ in the first syllable; the middle /eɪ/ is a clear diphthong. UK English often features less rhoticity in some contexts but maintains the /ˈhɪ.lə.ri.əs/ with a slightly shorter second syllable and more rounded /ɪ/ in the first vowel cluster. Australian English echoes rhotic tendencies moderately and prefers a strong /eɪ/ in the middle, but with faster vowel reduction and a softer final /ə/ or /ɪəs/. Listen for subtle vowel length and the final /əs/ crispness.
The difficulty centers on the three-syllable rhythm and the diphthong /eɪ/ in the second syllable, plus the final /əs/ cluster that often reduces to a schwa + s. Speakers may balance the secondary stress correctly while keeping the initial syllable short. Additionally, the sequence 'liar' in the middle can tempt mispronunciations like /hɪˈlaɪr.i.əs/; avoid conflating with 'hilarious' containing 'lay' sound. Focus on the /eɪ/ glide, clear /l/ and /r/ articulation, and crisp termination of /əs/.
A unique aspect is the elision tendency in rapid speech where the middle syllable can compress, making /ˈhɪ.lə.rɪ.əs/ or /hɪˈleə.ri.əs/ depending on accent. The second syllable carries main stress, guiding the rhythm: hi-LA-ri-ous. Some speakers partially reduce the middle syllable to a schwa-like sound /ə/ in casual talk, but it’s important to keep the /eɪ/ diphthong clear for clarity, especially in careful speech.
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Hilarious originates from the Latin hilaris meaning cheerful or glad, which itself derives from hila, meaning cheerful or joyous. The transformation began in English in the 17th century, where hilaris blended with French influences, gradually adopting the English form hilarious to describe things inducing laughter. Over time, the word broadened from simply cheerful to specifically provoking amusement and laughter. The suffix -ous, common in adjectives, marks a quality or state, signaling that something possesses the quality of hilarity. Early uses framed humor in literary descriptions and satire, evolving to a colloquial everyday descriptor for anything extremely funny. First known uses appear in 17th- to 18th-century English texts, often in relation to laughter or humorous narratives. In modern usage, hilarious can be applied to a wide spectrum—from slapstick jokes to witty anecdotes—while maintaining a slightly informal tone. The etymology reflects the social function of laughter and amusement in communication, as the term migrated from classical associations of cheerfulness to the lively, humorous expressions encountered in contemporary speech.
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💡 These words have similar meanings to "Hilarious" and can often be used interchangeably.
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Words that rhyme with "Hilarious"
-ous sounds
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