Gliding is a phonological pattern in which a child replaces the liquid sounds /r/ and /l/ with the glides /w/ or /j/ (the "y" sound): rabbit becomes wabbit, leg becomes weg or yeg, red becomes wed. It is one of the last common patterns to fade. ASHA's table lists gliding as typically gone by age 6–7; Caroline Bowen's widely used chart, based on Grunwell (1987), gives about age 5 (ASHA; Bowen).
This guide covers what gliding sounds like, when it should fade, how to tell it apart from an /r/ articulation error, and how to treat it with minimal pairs, word lists, and simple activities.
Gliding at a glance
Question | Short answer |
|---|---|
What is it? | The liquids /r/ and /l/ are replaced by the glides /w/ or /j/ (the "y" sound). |
Examples | rabbit → wabbit, red → wed, leg → weg, lamb → yam |
Type | A phonological pattern (a substitution process) that affects a class of sounds, not a single sound. |
When does it stop? | Usually between 5 and 7: ASHA lists 6–7, Bowen's chart about 5. /l/ tends to settle before /r/. |
How is it treated? | Minimal pairs (ring–wing, lake–wake), the cycles approach, and practice with /r/ and /l/ word lists. |
Free word lists |
What is gliding in speech?
ASHA defines gliding as a pattern in which "a liquid (/ɹ/, /l/) is replaced with a glide (/w/, /j/)", with the examples /wæbɪt/ for rabbit and /jɛjo/ for yellow (ASHA Practice Portal). (/ɹ/ is the phonetic symbol for the English r.) Bowen's examples are wadder for ladder, and both weg and yeg for leg (Bowen).
/r/ and /l/ are called liquids. They are among the hardest consonants in English: the tongue has to take a precise shape while air flows around it. /w/ and /j/ are glides, made with a simpler gesture: rounded lips for /w/, the middle of the tongue raised toward the roof of the mouth for /j/. A child who glides keeps the rhythm and voicing of the word but swaps the hard tongue shape for an easy one.
Gliding comes in three common forms:
/r/ becomes /w/: red becomes wed, run becomes wun, carrot becomes cawot
/l/ becomes /w/: lake becomes wake, leg becomes weg, balloon becomes bawoon
/l/ becomes /j/: lamb becomes yam, less becomes yes, leg becomes yeg
Gliding examples
Pattern | Target words | Child says |
|---|---|---|
/r/ → /w/ at the start of a word | ring / rake / red / rock | wing / wake / wed / wok |
/l/ → /w/ at the start of a word | lake / light / lip / leg | wake / white / whip / weg |
/l/ → /j/ | lamb / less / lawn / lot | yam / yes / yawn / yacht |
In the middle of a word | carrot / berry / balloon / jelly | cawot / bewy / bawoon / jewy |
Inside a cluster | frog / tree / play / clown | fwog / twee / pway / cwown |
Two details are worth checking:
Gliding inside clusters. Fwog for frog is gliding, not cluster reduction: the cluster still has two sounds, but /r/ has turned into /w/. Fog for frog would be cluster reduction. The two patterns fade on different timelines, so it pays to tell them apart (see our guide to cluster reduction).
Vowel-like R is a different target. The "r" in car, bird, or deer works like part of the vowel. A child who says cah for car is not gliding; that is a vocalic /r/ error, and it needs its own word sets. Our vocalic R word lists split it into er, ar, or, air, ear, and ire.
When does gliding stop?
Charts give different ages for gliding, and the gap is wider than for most patterns:
Source | What it measures | Gliding and liquids |
|---|---|---|
Likely age the pattern is eliminated | 6–7 years | |
Bowen (2011), based on Grunwell (1987) | Age the pattern is typically gone | 5;0 |
Crowe & McLeod (2020), 15 studies, 18,907 US children | Age by which 90% of children produce the sound | /l/: 4;0–4;11 · /r/: 5;0–5;11 |
ASHA's age column draws on Bowen (2011) and two clinical textbooks; Bowen's chart rests on Grunwell's 1987 data. Crowe and McLeod measure something different: not when gliding stops, but when the sound itself is correct. /r/ also varies more than almost any other sound: across the studies they reviewed, /r/ and /s/ "had the largest variability in age ranges", with a standard deviation of about 20 months. Our phonological processes chart explains why the charts disagree.
What that means in practice:
At 2 to 4, gliding is expected. In a study of typically developing children aged 1;6 to 2;5, "deviations involving liquids (e.g., gliding)" were among the most common patterns, alongside cluster reduction (Preisser, Hodson & Paden, 1988).
At 5, it is still common, mainly for /r/. /l/ should be well on its way: 90% of US children produce /l/ during the 4-year range.
Past about 6, or earlier if the child is hard to understand, an evaluation by a speech-language pathologist is worthwhile. ASHA's guidance: "Phonological patterns that persist, or phonological patterns that are atypical, lead to a diagnosis of phonological disorders."
Treat these ages as guides. In Bowen's words, such age estimates "are guides, not universal diagnostic cutoffs."
Gliding or an R articulation error?
By school age, wabbit raises a practical question: is this still a phonological pattern, or a problem with producing /r/ itself? ASHA notes that the two are often hard to separate, that "a single child might show both articulation and phonological error types", and that "those specific errors might need different treatment approaches" (ASHA Practice Portal).
Three questions help sort it out:
Is /l/ affected too? Gliding of both liquids, together with other patterns such as stopping or cluster reduction, points to a phonological pattern. A child whose only error is /r/ is more likely to have an /r/ articulation problem.
Is it a clear /w/, or a distorted r? Gliding replaces /r/ with a clear /w/. Children also produce /r/ with too little "r" quality (derhotacized) or with rounded lips; Crowe and McLeod, summarizing Smit (1993), list "[w], derhotacization, and labialization" as the most common errors on word-initial /r/.
How old is the child? Errors on late sounds that last past 8 or 9 are usually called residual speech errors, a type of speech sound disorder "in which atypical speech patterns, typically distortions of late-developing sounds like /ɹ/, /s/, or /l/, persist beyond 8–9 years of age" (McAllister Byun & Hitchcock, 2020).
The upshot: minimal pairs suit a child who glides as part of a pattern. A child with an isolated /r/ distortion usually needs help making the sound first, with placement cues and, for older children, visual biofeedback. Our guide to teaching the R sound covers that route.
How do you treat gliding? Minimal pairs
ASHA notes that phonological contrast approaches "are frequently used to address phonological error patterns", with minimal pairs the best known (ASHA Practice Portal). The idea is simple: two pictures whose names differ only in the sound the child changes. When the child says wing but means ring, they get the wing card, and the mix-up shows that /r/ and /w/ make different words. Gliding produces many good pairs, because the glided word is often a real word.
These pairs are checked against the CMU Pronouncing Dictionary, so each one differs by exactly one sound in American English:
/r/ vs /w/: ring–wing, rake–wake, rock–wok, rag–wag, rink–wink, red–wed, ride–wide, rest–west, rip–whip, right–white
/l/ vs /w/: lake–wake, lock–wok, lick–wick, leap–weep, light–white, lip–whip, lizard–wizard, late–wait
/l/ vs /j/: lamb–yam, less–yes, lawn–yawn, lard–yard, lot–yacht
A note on spelling: whale, white, and whip start with the same /w/ sound as wet for most American speakers, which is why light–white and lip–whip work as pairs. If your community still says "hw" in these words, use pairs like rake–wake instead.
For session structure, how many pairs to use, and when to switch to other contrast types, see our guide to minimal pairs in speech therapy. If a child has several patterns at once, the cycles approach usually schedules liquids late in the sequence, after word shapes, velars, and /s/ clusters.
Should you work on /l/ or /r/ first?
Both choices can be defended.
Developmental order favors /l/: in Crowe and McLeod's US data, 90% of children produce /l/ in the 4-year range and /r/ only in the 5-year range. Starting with /l/ often means an earlier success.
The complexity approach argues the opposite: treating a harder target can produce wider change across the sound system (Gierut, 2001; see Storkel's tutorial on selecting complexity targets).
Stimulability is a practical tie-breaker: if the child can already say one of the two sounds correctly when you model it, that is where early success is most likely.
Gliding activities (no prep)
Ring or wing? Put two pictures on the table and say one word. The child points. Then swap roles and pick up whichever card the child actually named.
Cup hunt. Hide picture cards under paper cups. The child lifts a cup and names the picture; a correct word earns the next cup. It packs many trials into a few minutes.
Tongue up for L. For /l/, have the child lift the tongue tip to the bump behind the top teeth and hold it there in a mirror ("la-la-la") before saying the word. Gliding to /w/ happens with the lips; /l/ happens with the tongue tip.
Sort the pictures. Sort cards into an "R box" and a "W box". Hearing the difference in other people's words often comes before making it.
Move up the levels. Once single words are mostly correct, practice the same target in R phrases, R sentences, L phrases, and L sentences.
Themed sets keep long runs of drill interesting: initial R animal words and initial L food words are ready to use. When you need a printable minimal pairs set for gliding with both words pictured, Ga-loo builds one in a minute, with a listening and saying data sheet and a black-and-white home page.
Frequently asked questions
At what age should gliding stop?
Charts disagree more than for most patterns. ASHA lists 6–7 years; Bowen's chart, based on Grunwell (1987), lists 5;0. /l/ usually settles before /r/. If a child is still gliding consistently past about 6, or is hard to understand, ask a speech-language pathologist for an evaluation.
Is saying "wabbit" for "rabbit" normal?
At 3, 4, or 5, yes. /r/ is one of the last sounds children master: in US data, 90% of children produce it only during the 5-year range (Crowe & McLeod, 2020). If a child still says wabbit past 6 or 7, an evaluation is worthwhile.
What is the difference between gliding and a lisp?
A lisp affects /s/ and /z/: the air goes over the tongue tip (a frontal lisp) or out the sides (a lateral lisp). Gliding affects /r/ and /l/, which turn into /w/ or /j/. A child can have both, and they are treated separately.
Is "fwog" for "frog" gliding or cluster reduction?
Gliding. Both sounds of the cluster are still there, but /r/ became /w/. If the child said fog, a sound would be missing, and that would be cluster reduction.
What are the best minimal pairs for gliding?
Pairs where both words are easy to picture: ring–wing, rake–wake, rock–wok, red–wed, lake–wake, light–white, lip–whip, lizard–wizard, and, for /l/ to /j/, lamb–yam and lawn–yawn.
Can gliding be practiced at home?
Yes, once an SLP has confirmed the pattern. Short daily listening games with the same minimal pairs used in sessions work well. Saying drills are most useful once the child can make the sound correctly in sessions; before that, repeating words at home mostly rehearses the old pattern.
Sources are linked throughout, including ASHA's Practice Portal on articulation and phonology and Caroline Bowen's table of phonological processes by age. Educational content: an SLP chooses the approach for a specific child.