What to Do When You Don't Know the Word in DET Speaking
A student who couldn't name the place he was standing in learned to describe a deep-sea animal he'd never seen. The same chain keeps you talking when a word disappears in the test.
You're describing the photo. The timer is running. And the word for the thing in the middle of the image is gone. You know it. You studied it. It will come back about an hour after the test ends. Right now you have nothing, and the seconds are counting.
Most students stop here. They apologize to the microphone, or they go quiet and wait for the word to return. It doesn't. And this is the part that matters for your score: the DET measures connected speech. The missing word was invisible. The silence was not.
Not knowing a word does not mean you don't know English. It means you don't know a word. Native speakers have this problem every day. Stand in any English-speaking kitchen and you will hear someone say "pass me the, you know, the metal thing, for the eggs." They kept talking, described it, and got the whisk. Nobody questioned their English.
So the useful question is not "how do I learn every word?" It's "what do I do in the three seconds after a word doesn't come?" That has an answer, and we taught it to a student last week. He started the lesson unable to tell us where he was.
The lesson
One of our students was on summer holiday in China. We asked where he was staying, and he couldn't answer. He knew the place. The English name just wasn't there.
We didn't give him the word. We opened a map instead. He knew he was in China, so we asked him to circle roughly where. Then: what can you see around it? Mountains, he said. Which mountain? We zoomed in, found it, and from the mountain he walked to the name of the town. Everything he needed was already in his head. He needed a path to it, not a bigger dictionary.
One lucky answer is not a skill, so we kept going. We asked him a science question: if you find something new in nature, how do you decide what it is? He knew this from school. You start with living or non-living. We drew the classification on the whiteboard. Then we showed him a photo of a sea pig, a small pink creature from the deep ocean floor. We chose it because we were certain he had no word for it. Almost nobody does.
He looked at the photo and reasoned out loud:
"It's in the water, and it is walking, so it must be some kind of animal."
"It's going to be some sort of fish, because it doesn't have lungs."
Then we joined his observations using defining clauses — the "that" clauses that tell your listener exactly which thing you mean — and he produced this:
"This is an animal that lives in the sea, does not have lungs, walks on the ocean floor, and looks like a sea cucumber, and it is pink."
His brain hadn't lost anything
Psychologists have a name for the moment a word refuses to come: a tip-of-the-tongue state. It has been studied since the 1960s, and decades of research agree on three things. These moments happen to almost everyone. They happen about once a week. And they are states of partial access, not ignorance — people stuck on a word can often name its first letter or count its syllables. The word is there. The direct road to it is temporarily closed.
That is why the map worked. We never gave our student new information. We gave him side roads: the country he knew, the mountains he could see, the classification he learned in science class. Every step used something already in his head. The chain below does the same thing, on demand, in the middle of a test.
Why that sentence scores
Look at what he built with no word for the thing in front of him: a defining clause ("an animal that lives in the sea"), correct present simple for facts, a negative, a comparison to something he could name, and four pieces of information joined into one sentence without stopping.
Memorizing the word "sea pig" takes ten seconds and proves almost nothing about your English. Constructing an accurate description of something you cannot name proves a lot, and it is closer to what the test is actually checking. Duolingo's own scoring documentation describes the DET through subscores like production and conversation — how you build and connect language — not vocabulary size. High scores don't come from having the right noun in memory on the right day. They come from building meaning when it isn't there. That is a use-of-language skill, and it can be trained.
He was wrong, and it didn't matter
Small correction: a sea pig is not a fish. It is also not a pig. It's a type of sea cucumber, which he had already noticed himself when he made the comparison. His science was off.
His score would not have been. The DET is not a biology exam. His reasoning was clear and his English was accurate, and that was the whole performance. This matters if you freeze in the test because you're not sure your answer is correct. Nobody is grading the contents. They are grading the English you wrap around the contents.
The chain
Here is the same process as steps you can run on anything — an object, a place, a job, a feeling:
- Category. What kind of thing is it? Animal, tool, building, machine.
- Where. Where do you find it?
- What it does. One action or one purpose.
- What it's like. Compare it to something you can name.
- Join them. "It's a ___ that ___." Keep talking.
In the test, it sounds like this. You're describing a market photo and you can't find the word "scale," the machine for weighing fruit. So you say: "The seller is using a small machine that measures how heavy the fruit is. You put the fruit on top and it shows a number." No pause, no apology. The rater hears clear, structured English and moves on. So do you.
Won't more vocabulary fix this?
Partly. More vocabulary makes the gaps rarer, and you should keep building it. But it cannot make the gaps disappear, because there is no vocabulary size where words stop going missing. There is a word missing in your first language right now.
Two honest limits in the other direction. The chain has a floor: it runs on simple words — animal, machine, water, heavy. If those are missing, your problem today really is vocabulary, and the fix is different. And the chain is for blocked moments, not for every sentence. If you describe around words you actually know, you make yourself slower. It depends on where you are.
Learning words and learning to use the words you have are trained separately, and the second one is what moves scores. We see the same thing with grammar: a student can know a rule perfectly and still break it two minutes later, because knowing and doing are different skills. The chain above is one of more than fifteen techniques we teach for this exact reason. Reading it today is the easy part. Running it at second twelve of a timed answer, with your heart rate up, is what takes practice.
Train it this week
Five minutes a day is enough:
- Open any photo with objects in it. Pick one thing you can't name in English. Run the chain out loud with a 30-second timer.
- Do three objects, then stop.
- Twice this week, run it inside a real task instead: describe a photo for 60 seconds and keep the chain ready for the word that goes missing. One always does.
If you're building a full study plan, this drill fits into how we recommend preparing for the DET as a daily speaking warm-up.
Try it with the clock running
That is the honest test of whether you own this skill yet. Use the free DET practice and try the chain on real question types. You'll find out quickly where your answers stall, and that tells you what to work on next.
Not sure why your DET score is stuck?
Take a free practice test and see exactly where your score leaks — before you pay for the real thing.
Start the free practice test →Frequently asked
What should I do if I forget a word during DET speaking?
Keep talking and describe the word instead. Name its category, where it's found, what it does, and what it's similar to, using a sentence like "It's a ___ that ___." The DET rewards connected speech; silence is what lowers the score.
Does describing a word instead of saying it lower my DET score?
No. Describing around a missing word shows grammatical range and fluency. A clear description built with relative clauses demonstrates more English than a single memorized noun.
Do native English speakers forget words too?
All the time. Research on tip-of-the-tongue states shows they happen to almost everyone, about once a week. Native speakers say things like "the metal thing for the eggs" instead of "whisk." The skill is continuing to speak while you work around it.
Do I need to be factually correct in my DET answers?
No. The DET measures your English, not your general knowledge. You can be unsure or wrong about a fact and still score well if your language is clear and fluent.
Keep reading
She Learned the Rule. Three Minutes Later, She Broke It Twice.
A student learned the do/make rule, confirmed she understood it, and broke it twice three minutes later. That gap is why DET scores stall, and why studying harder does not close it.
Why You Run Out of Things to Say on the DET Speaking Test
You have the English, but on DET Speaking you go quiet a sentence or two in. The real problem isn't vocabulary — it's generating ideas under pressure. Here's what to train.
DET for Italian Speakers: 3 Habits Costing You Points
Italian speakers lose DET points to three habits: false friends, Italian information order, and all-certainty answers. A real student case: 90 to a certified 105.