How to teach your child a language you're slowly losing yourself

Reading and re-learning together

If you've ever been mid-sentence, translating a picture book into your first language for your child, and hit a wall on a simple, tender word, you're not alone, and there's a name for what's happening. And no, it isn't a sign you're forgetting your native language. It's a sign the language you use every day is standing in the doorway, blocking the one you grew up in from coming through.

Here's what the research says about why this happens, and what actually helps.

What language attrition actually is

Linguists call the gradual change in a first language after years of living in a dominant second language language attrition. Monika Schmid, who has spent a career studying it, mostly with people who left their home country under far more difficult circumstances than a job move, found something reassuring in her research: the first language usually isn't gone, it's just crowded. The challenge then becomes inhibiting the dominant language for long enough to let the first one come forward. Your native language is still in the room. The language you use all day just gets to the door first.

This matters practically, because it changes what "getting better" looks like. You're not relearning Italian, or Polish, or Tagalog, from nothing: more simply, you are clearing a path back to something that's still there.

Why it shows up hardest with your child, not at work

Most heritage-language speakers manage fine in practical situations: ordering food, phone calls with family, reading the news, even work. Where it gets harder is the register a mother tongue is actually built for: the bedtime version, the scraped-knee version, the tender, soft, specific vocabulary you'd use with a small child. That register isn't used much in adult life abroad, so it's the first thing to go quiet, and the first thing you notice missing exactly when you need it most, mid-story, mid-lullaby.

Knowing this in advance helps. The gap isn't a sign you've failed at your own language. It's just telling us that one specific, tender register has had the least practice.

The good news: recall is faster than fluency

Songs and rhymes are stored differently from ordinary vocabulary. Once a rhyme is learned in childhood, the rhythm tends to come back almost entirely intact, faster than grammar or vocabulary does, because it's stored as much in the body as in the mind. A rhyme you haven't said in thirty years can surface whole, correctly stressed, correctly timed, the moment you say the first line out loud. This is one of the fastest, lowest-effort ways back into a rusty heritage language.

Four ways to rebuild your own heritage language while you teach it

1. Start with rhythm, not rules: nursery rhymes, lullabies, and children's songs are a shortcut back into a language you haven't used in years, because the rhythm carries the words. Don't start with grammar revision. Start with the songs you can still half-remember and let your mouth do the rest. (And if you need to YouTube them late at night to remind yourself, that's totally fine too!)

2. Read your child's books for yourself first: before you read a book to your child, skim it alone. This turns a performance under pressure into low-stakes practice, and means the tender words, the ones that tend to go missing, get found in private rather than mid-sentence with an audience.

3. Aim for warmth, not correctness: a slightly wrong verb ending said with tenderness does more for a child's relationship with a heritage language than a grammatically perfect sentence said anxiously or flatly. The tone is doing the emotional work; the grammar can catch up later, or not at all.

4. Build a small shared library, in both directions: heritage-language picture books and nursery-rhyme collections aren't just for your child, they're your own re-entry material. A collection of filastrocche, or their equivalent in your own heritage language, bought for your child's shelf, works just as well read alone on the floor before anyone else is awake.

What this means in practice

• Don't wait for fluency to come back before you start using the language with your child. Start with what surfaces easily: songs, rhymes, single tender phrases, and build outward from there.

• Keep a small notebook or note on your phone of words that go missing mid-sentence. Look them up later, calmly, rather than in the moment.

• Treat any rediscovered rhyme or phrase as a genuine win, not a baseline you should have kept up all along.

• If a grandparent or relative still speaks the language fluently, ask them to record themselves saying a few of the songs or phrases you're missing. Recall is often instant once you hear it again.

Bottom line

You don't need your fluency fully back to give your child an emotionally rich heritage language. Consistency and warmth outperform correctness, every time the research has looked at it. And you might, unexpectedly, get some of your own childhood back in the process, which nobody warns you about, and which turns out to be one of the nicer surprises in raising a bilingual child far from home.

For the longer, more personal essay behind this piece, see the Sowing Tales essay Mother, Tongue. For more on keeping a heritage language alive across generations, see How to keep a heritage language alive in your family.