Which articulation category includes sounds such as the English 'l' and 'r' and is often described as more vowel-like than true consonants?

• A. Glides
• B. Fricatives
• C. Liquids
• D. Nasals

Answer: (C)

Liquids are consonants produced with an open vocal tract that allows air to flow with little turbulence, giving them a smooth, resonant quality. In English, the sounds l and r fit this category: the tongue forms a partial closure, but air flows around the sides for the l and over the tongue for the r, so the resulting sound isn’t as noisy or sharply obstructed as fricatives or stops. Because liquids are sonorants—voiced and highly resonant—they behave more like vowels in their sonority and smoothness, which is why they’re often described as being more vowel-like than true consonants. Glides also share some vowel-like traits, but they function as semivowels that glide toward vowels, whereas liquids maintain a stable, resonant quality as consonants. Fricatives produce continuous noise, and nasals involve airflow through the nasal cavity, both of which are less vowel-like than liquids.