Fluency isn’t a magic number, but data gives us some clarity. Research suggests that knowing the top 1,000 most frequent words in Spanish gives you access to roughly 85% of daily conversations. If you hit 2,000–3,000 words, you’ll understand nearly everything in most casual, real-world situations.

But fluency is not just a word count game. Context matters. Learning the word correr (to run) is useful, but hearing it in tienes que correr más despacio teaches you tone, grammar, and rhythm too. That’s where methods like comprehensible input outperform brute-force memorization.

Instead of chasing word lists, focus on high-frequency words in context. If you’re watching native content that aligns with your level and gradually expands your vocabulary, you're moving toward fluency faster than someone memorizing isolated flashcards.

Also, passive vocabulary (words you recognize) grows faster than active vocabulary (words you can use). Don’t worry if you can’t use every word immediately—the recognition stage is critical. That’s why immersion tools like Parrot prioritize exposure first.

Aim to grow your vocabulary through layered exposure-hearing the same word in multiple contexts. It’s not about how many words you know, but how often you hear and use them. Fluency is a feeling, not a finish line.