Perilous is an adjective meaning full of danger or risk; hazardous or precarious. It describes situations, actions, or paths that pose considerable threat, often requiring caution or bravery. The term conveys a sense of imminent danger or vulnerability, more formal or literary in tone than everyday speech.
"The hikers faced a perilous ascent that required careful footing and steady hands."
"Entering the collapsed tunnel proved perilous, with falling debris and shifting rock."
"The stock market crash placed investors in a perilous position."
"A single misstep on the cliff edge would lead to perilous consequences."
Perilous comes from Middle French perilous, from Old French perilleus, which itself originates in Latin periculosus, from periculum meaning danger or peril. The Latin root periculum combines per- (through, entirely) with the root celer, or sometimes a form of dolor, signaling risk or attack; though etymology is debated, the sense shift toward ‘dangerous’ solidified in Medieval Latin and early Romance languages. In English, perilous appeared by the 15th century, importing a sense of grave risk or exposure to danger. Over time it maintained a formal, sometimes lilting quality often found in literary or ceremonial contexts, while remaining fully usable in dramatic narration and descriptive prose to emphasize threat or difficulty. First known uses are recorded in Middle English texts where peril was commonplace and the -ous suffix denoted an adjective form describing characteristic attributes. The professional, cautious nuance of perilous sits comfortably in clauses about treacherous journeys, dangerous undertakings, or precarious moral choices, preserving a tone of severity across centuries.
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💡 These words have similar meanings to "Perilous" and can often be used interchangeably.
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Words that rhyme with "Perilous"
-ous sounds
Practice with these rhyming pairs to improve your pronunciation consistency:
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US: /ˈpɛr.ɪ.ləs/ with primary stress on the first syllable, the second syllable reduced to a quick /ɪ/ and the final /ləs/ in a light, unstressed form. UK: /ˈpɛr.ɪ.ləs/ similar pattern; some speakers may reduce the middle to /ˈpɪr.ɪ.ləs/ in rapid speech, but /pɛr/ remains common. AU: /ˈpɛr.ɪ.ləs/ with a crisp ‘r’ in many dialects and a slightly flatter vowel in the first syllable. Tip: keep the first syllable strong, let the middle relax, and finish with a soft -ləs.
Common errors include swapping the syllables or misplacing the stress, saying per-IL-ous or pe-RIL-ous. Another is reducing the first vowel too much, producing /pəˈrɪləs/ instead of /ˈpɛr.ɪ.ləs/. To correct: keep primary stress on the first syllable, articulate /p/ with a light burst, use a clear /ɛ/ in the first vowel, and finalize with a quick, unstressed /ləs/.
US: /ˈpɛr.ɪ.ləs/ with rhotic r and a crisp first vowel; UK: /ˈpe-rɪ.ləs/ or /ˈpɛr.ɪ.ləs/ with less aggressive rhoticity in some accents and slightly reduced middle vowel in rapid speech; AU: /ˈpeː.rɪ.ləs/ or /ˈpɜː.ləs/ in broader Australian speech, where the first vowel may be closer to /ɜː/ and the tensing of the second syllable varies. Across all, the final -ous is typically /-əs/.
The challenge lies in the tense, unrounded first vowel /ɛ/ followed by a quick, light /r/ and a strong first syllable, with the final unstressed /əs/ adding rhythmic complexity. The two-consonant cluster /r/ after /p/ can create subtle flavors across dialects; coupled with a short middle vowel, keeping the syllables distinct without running them together is essential.
A notable feature is the two-consonant onset of the first syllable /p/ plus /r/ forming a near-ruled cluster, which can blur for some speakers if the /ɹ/ is not released promptly. Maintaining a crisp /ɹ/ followed by a precise short /ɛ/ is key, as is ensuring the final /ə.s/ remains lightly connected rather than fully enunciated.
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