The best way to learn Spanish vocabulary, and how many words a day

The best way to learn Spanish vocabulary is to start with the most common words, take each one from a real sentence you heard or read, and then quiz yourself on it out loud at gaps that keep getting longer.

For most adults that adds up to about ten new words a day, a short review you never skip, and plenty of Spanish you can mostly follow. The themed list of 500 travel words, read over on the train, is the slow road. Here's why, and what to do instead.

Which Spanish words to learn first

Learn by frequency, not by topic. When Mark Davies built the Routledge frequency dictionary of Spanish, he measured how much of real Spanish the most common words cover. The top 1,000 account for about 88% of the words in spoken Spanish and 75 to 80% in written Spanish.

The second thousand adds only 5 to 8% more. So the best bargain in the whole language sits right at the start.

Before you print a list, know that covering 88% of the words is not understanding 88% of the sentences. At 88% you still miss about one word in eight, and Paul Nation's research on English works from 98% as the point where a reader follows a text unaided.

The very top of any frequency list is glue like que, de, en and y. You'll absorb those from listening without a single flashcard.

Your deliberate effort belongs to the common verbs (tener, hacer, poder, decir, querer) and the small connectors that let you build a real sentence (porque, cuando, todavía, aunque). Then add the words your own life needs. If you cook every night, la cebolla matters more to you than any ranking.

Learn each word inside a sentence

A word-and-translation flashcard is fine for la cebolla. It falls apart on the verbs that do the most work. SpanishDict lists probar as to try, to test, to taste, to prove and to try on.

"Déjame probar la sopa" is tasting, and "¿Por qué no te pruebas ese pantalón?" is trying on. A card that says probar = to try will let you down at the dinner table.

So keep the sentence where you met the word, and put it on the card. It also carries grammar a bare word hides. Agua is feminine but takes el because it starts with a stressed a, so it's el agua fresca, never el agua fresco, and "agua = water" will never tell you that.

The best sentence of all comes from something you watched. You remember who said it, and in what mood, and that memory is a second hook for the word.

Quiz yourself instead of rereading

This is the part most people get backwards. In a 2008 study in Science, Jeffrey Karpicke and Henry Roediger had students learn 40 Swahili-English word pairs.

Students who kept being tested on the pairs recalled about 80% of them a week later. Students who kept studying the pairs, but stopped being tested on each one once they got it right, recalled 36%.

The unsettling part is that every group predicted it would remember about half. Rereading feels like learning, and the students had no sense of which kind of practice was working.

So hide the answer. Look at the English meaning, or at the Spanish sentence with the word blanked out, and produce the Spanish before you flip the card. A wrong guess is fine; check it, and the card comes back sooner.

Space the reviews out

The other half is timing. In a nine-year study, four people, the psychologist Harry Bahrick and three members of his family, learned 300 foreign-language word pairs, then relearned them at intervals of 14, 28 or 56 days. Thirteen sessions 56 days apart gave about the same retention years later as 26 sessions 14 days apart.

That's half the sessions for the same result. The wide gaps slowed learning a little at first, because more was forgotten in between, and paid it back in what stayed.

You don't have to work out the intervals. Any spaced repetition app does it for you. A card you get right comes back later each time, and a card you miss comes back soon.

Say every word out loud

Read the sentence aloud every time you review it. In a series of experiments, Colin MacLeod's lab found that saying a word aloud while studying it, instead of reading it silently, improved memory for it.

The honest caveat is that the effect showed up when people said some words aloud and read others silently. It makes the spoken words stand out.

I'd do it anyway. It costs nothing, and recognizing probar on a page and getting "pruebo" out at a market stall are two different skills.

This loop is what Amiora is built around. Tap a word in a Spanish video to see what it means, add it to your review with one more tap, and the app schedules every review for you.

Then you can use it in a voice conversation with an AI tutor who corrects you gently, a few a day free and unlimited on Premium.

How many Spanish words should you learn a day?

About ten new ones, if you have a job and a life. That's 3,650 a year, enough to get through Davies' first 3,000 words in about ten months.

New words are the easy part. Reviews are what pile up, because every new card comes back several times in its first weeks, so a burst of 40 on Sunday turns into a heavy Thursday.

Here is my rule. If the daily review takes more than 20 minutes, stop adding new words until it shrinks. Skip new words on a busy day whenever you like, but do the review.

A 25-minute daily routine

1. Ten minutes of Spanish you mostly understand. A show, a podcast, a YouTube channel at your level. When a word comes up twice and you still don't know it, save the whole sentence.
2. Ten minutes of review. Read each sentence aloud, say the meaning before you flip, and mark it honestly.
3. Five minutes of use. Put two of today's words into sentences about your actual day, out loud or in a message to someone: "Hoy probé una receta nueva."

Mistakes that waste the most time

• Rereading lists. In the Swahili study, extra studying after a word was learned made no measurable difference a week later.
• Learning rare words early. Week one is not the week for la berenjena, unless you really love eggplant.
• Cramming 50 new cards on a motivated Sunday. You'll pay for every one of them in reviews all week.
• Only ever going from Spanish to English. You'll understand probar for years and still never say it.

Start tonight with one sentence you actually heard. Hide the word, say it out loud, and let it come back in a few days.