Look It Up or Let It Go? What to Do with Unknown Words in a Podcast

You’re listening to an episode, following along reasonably well, and then a word you don’t know goes past. Then another. Do you stop and look them up? If you do, you lose the thread. If you don’t, you might miss something important — and you never learn new vocabulary.

This is one of the most common dilemmas in learning English with podcasts. The good news is that there’s a simple way to decide, word by word, whether to look it up or let it go. If you’re new to the overall method, start with The Complete Guide to Learning English with Podcasts; this article zooms in on what happens to vocabulary along the way.

Rule 1: Don’t look anything up on the first listen

Your first listen is for the gist. Stopping for words turns it into a stop-start reading exercise, and you lose what makes listening practice valuable: following real speech in real time.

So on the first pass, let every unknown word go. If you can’t stand it, jot down the approximate time — but keep listening. You’ll often find the word is explained a few seconds later, or turns out not to matter.

Rule 2: On the intensive pass, use the three-question test

During your second listen, with the transcript open, you’ll see the unknown words clearly. For each one, ask three questions:

1. Does it block the meaning? If you can’t understand the sentence — or the point of the whole section — without it, look it up.
2. Does it keep coming back? If the word appears several times in the episode, it’s probably central to the topic. Look it up.
3. Would I want to say it? If it’s a word or phrase you can imagine using in your own conversations, look it up.

If the answer to all three is no, let it go. That includes a lot of words: names of obscure places, technical terms the host uses once, rare words a guest drops in passing. Native speakers skip over words they don’t fully know all the time.

Example: one sentence, three unknown words

Imagine a host saying something like this (an example written for this article):

“We’d been haggling over the price for an hour when the seller finally caved and threw in a free lantern.”

Suppose haggling, caved and lantern are new to you.

• haggling — blocks the meaning (what were they doing for an hour?) and is something you might want to say. Look it up.
• caved — blocks the meaning (what did the seller do?) and cave (in) is useful in everyday conversation. Look it up.
• lantern — doesn’t block the meaning; “a free something” is enough. Unless it keeps coming up, let it go.

Rule 3: Guess before you check

Before you look a word up, make a guess from context. “The seller finally caved and threw in something free” — so caved probably means something like gave in. Then check.

This small step matters. When your guess is right, the meaning sticks because you worked it out. When it’s wrong, the surprise makes the correct meaning more memorable. Either way, you learn more than by looking it up straight away.

Rule 4: Save phrases, not just words

When you look something up, notice the words around it. Often the useful thing isn’t the single word but the chunk it lives in:

• not threw, but threw in (added something extra for free)
• not caved, but finally caved (gave in after resisting)
• not point, but that’s a fair point

Chunks carry the meaning and the way the language is actually used, so they’re much easier to reuse when you speak.

Rule 5: Save less, but save it properly

The temptation is to save every new word “just in case”. Resist it. A word bank that grows faster than you can review turns into a guilt list.

For each word or phrase you keep:

• Write your own example sentence, about your own life. “I always haggle at night markets.” “I said no three times, then I caved.”
• Note where you heard it — the episode and roughly when — so you can go back and hear it in context.
• Say it aloud, ideally by shadowing the original sentence from the episode. Shadowing practice is a quick way to get a phrase into your mouth, not just your notes.

Then review in short sessions spread over several days rather than one long cram. A couple of minutes at the start of your daily practice is enough.

What about words you let go?

Letting a word go isn’t losing it forever. If it matters, it will come back — in this episode, the next one, or another show on the same topic. The second or third time you meet it, it will probably pass the three-question test, and that’s the moment to learn it. This is one reason it helps to stay with one show for a while: its vocabulary repeats naturally.

A quick checklist

1. First listen: let every unknown word go.
2. Intensive pass: for each unknown word, ask — does it block the meaning, does it repeat, would I say it?
3. Guess first, then check.
4. Save the phrase, not just the word, with your own example sentence.
5. Review briefly over several days and shadow the original sentence.

Want to put this into practice? Pick a show from the podcast directory for English learners, take a five-minute section, and see how few words you actually need to look up to understand it. In Podling, the word-synced transcript lets you tap a word, check it and save it to your word bank without leaving the episode.