03/27/2026
Digraph TH - tongue-biting sound 🧰
Things I Wish I Knew as a Parent (But Learned as an SLP) Series
Next up… Teaching the Tongue-Biting Digraph [th]
The digraph [th] is one that many children need extra help with, especially bilingual English-Spanish speakers because [th] does not exist in Spanish. It is typically mastered by age 6–7 for monolingual English speakers. A little more exposure and playful practice usually does the trick.
And yes, now that Thanksgiving has just passed, some of us probably heard “Tanksgiving” at the table more than once. That little mix-up is actually the perfect reminder that [th] is worth working on.
In my years as an SLP, the easiest way to explain [th] is simple: it is the tongue-biting sound. We stick the tongue out just a bit and lightly bite the tip while air comes out. There are two kinds: voiceless [th] (quiet, as in think, thumb, thank, bath, Thanksgiving) and voiced [th] (noisy, as in this, that, the, mother, brother).
Try these steps at home to teach clear [th]:
Mirror Play: Sit together at a mirror. Say, “Let’s bite our tongues, but not too hard, we still want to keep them!” Make it silly and fun while showing the tongue peeking out between the teeth.
Start Voiceless: Practice the quiet [th] first in isolation, just blowing air while lightly biting the tongue. Celebrate every clear puff of air.
Teach the Difference Between Voiceless and Voiced:
• Tongue tickle: Tell your child, “When we make the noisy [th], your tongue gets a tiny tickle, like a butterfly landed on it. Try it and see if you feel it!” (Most kids love this part and start giggling right away.)
• Hand on throat: Place a hand on the front of the neck. Voiceless [th] has no buzz, voiced [th] has a gentle vibration. This trick works for any voiced versus voiceless sound.
Build Up: Move from the sound alone, to syllables (th-ee, th-ow), to single words (think, thumb, thank, this, that, the), to short phrases, sentences, and finally conversation.
Keep practice targeted, fun, and simple to get the most without frustrating the learner. A few quick rounds several times a day beats one long, exhausting session every single time.
Model and Recast: When you hear “fank you” or “dis,” calmly repeat the word or sentence the right way (“Thank you!” or “Look at this!”). Auditory bombardment, hearing the correct sound over and over in natural conversation, is what provides the strongest natural cues and drives real change.
Sometimes the [th] digraph needs a little extra support from a speech-language pathologist. If you’d like personalized guidance, reach out to Empower Therapeutics, we’re here to help.
Have you tried the tongue-tickle trick or the hand-on-throat cue for [th]? Share your experiences in the comments, we’d love to learn together!