TellApart
← Hearing L and R apart
Word pair

glass · grass How to hear the difference

glass · grass7/20
Which word did you hear?

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Hear both words in 9 voices

Each row is one speaker saying both words. Play one, then the other, and switch to slow when the difference hides.

glass
US IPA: /ɡlæs/
grass
US IPA: /ɡræs/
Speed
  • American woman, younger
  • American woman, older
  • American man, younger
  • American man, older
  • British woman, younger
  • British woman, older
  • British man, younger
  • British man, older
  • Australian woman

What's different

Unlike p or k, g is voiced, so the L or R after it isn't whispered: the voice is already on, and you can hear the tongue move. In glass, the tongue tip touches the ridge behind the top teeth and lets go, and the vowel starts bright. In grass, the tongue touches nothing and the lips round, so the vowel starts darker, almost with a quick w.

The vowel itself is the same in both words, though it changes with the accent: American voices say the a of cat, most others the longer a of father. Either way it can't help you, so compare only the moment after the g, and switch to Slow, where the l and r are stretched.

Studies: Logan et al. 1991 · Lively et al. 1993 · Lively et al. 1994 · Bradlow et al. 1997 · Bradlow et al. 1999

Listen for

R has a darker, rounded ring. L sounds lighter and clearer.

More word pairs with these sounds

Hearing L and R apart: all 42 pairs →
Test your ear18 words across L vs R, B vs V and TH vs S, in about 2 minutes. See which sounds you already hear apart.Take the listening test →

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