Vocabulary first — but not for the reason it is usually given, and not to the exclusion of grammar. Here is where the line actually falls, and when it moves.
Vocabulary first. Words carry meaning on their own; grammar only arranges meaning that words have already supplied. A sentence of correct words in the wrong order is usually understood. A perfectly formed sentence with no vocabulary in it says nothing at all. Start with words, and bring grammar in to explain patterns you have already met.
Say you want ice, and all you have is the word for ice and the word for want. Want ice. You will get ice. Now suppose instead you have mastered the conditional and every pronoun in the language, and you do not know the word for ice. There is nothing you can do. You cannot gesture your way to a grammatical structure.
That is the whole argument, and it holds at every level. Vocabulary is what you are trying to say. Grammar is how precisely you say it. Precision matters, and it matters second.
Vocabulary research measures coverage: how much of a text or conversation is made of words you already know. Roughly 3,000 word families gets you to about 95% of everyday speech, and 6,000 to 7,000 gets you to 98%, the point at which listening stops being effortful.
There is no equivalent scale for grammar, and that absence is informative. You cannot know 95% of a grammar in a way that predicts comprehension, because grammatical knowledge does not accumulate in units that map onto understanding. Vocabulary does. It is the measurable bottleneck, and bottlenecks are what you attack first.
This is where the advice usually goes wrong. People hear “vocabulary first”, download a frequency list, and learn two thousand isolated words that they cannot assemble into anything.
Learn words in chunks — the phrase they arrive in, not the dictionary form. Learn I would like, not the conditional of the verb to like. Learn how much is it, not the interrogative structure. Fixed phrases are vocabulary that happens to contain grammar, and they let you speak months before you could construct the same sentence from rules.
You will find, later, that the grammar lesson explaining that structure takes about ten minutes, because you have been using it correctly for half a year and only need to be told why.
Somewhere around 500 to 1,000 words, ignoring grammar starts costing you more than it saves. You have enough raw material that word order and endings begin to change meaning rather than just sounding untidy, and you start noticing patterns you cannot explain. That is the moment grammar becomes efficient, because every rule now lands on a dozen examples you already carry.
How urgent it is depends heavily on the language:
| Language | How long you can defer grammar |
|---|---|
| English | Longest of any major language. Word order is fixed, endings are minimal, and a bare sequence of correct words is usually understood. |
| Spanish | Fairly long, but verb endings carry the subject, so you need present-tense conjugation earlier than you would like. Nouns and adjectives must agree. |
| Portuguese | Much like Spanish, with the added early hurdle that pronunciation and spelling diverge more, so listening needs attention from the start. |
| German | Shortest deferral. Gender and cases change the words themselves, so learning nouns without their articles creates work you will have to redo. Learn the article with the noun from day one, and leave the case tables until later. |
There is a real case on the other side, and it deserves stating properly rather than being waved away.
In heavily inflected languages, a small amount of early grammar is not a delay — it is a multiplier. If you do not know that a German noun changes form according to its role in the sentence, you will meet what looks like four different words and try to learn all four. Thirty minutes of explanation saves you weeks of confusion. The same goes for verb endings in Spanish and Portuguese: without them you cannot tell who is doing the action.
So the accurate version of the advice is not “ignore grammar”. It is: learn the minimum grammar that stops you from mislearning vocabulary, and defer everything else. That minimum is usually small — noun gender, one present tense, basic word order — and it is worth front-loading precisely because it protects the vocabulary work.
The test to apply: when you cannot say something, ask whether you were missing a word or a rule. For the first year it will almost always be a word. On the day it starts being a rule, that is your signal to sit down with the grammar.
Almost every textbook opens with the verb to be, then the present tense, then articles. This is not because it works better. It is because grammar is easy to sequence, easy to test and easy to mark, and vocabulary is none of those things.
A grammar syllabus gives a course a spine and an exam a right answer. It is an institutional convenience that has been mistaken for a learning principle, and it is the reason so many people finish years of school language study able to fill in a conjugation table and unable to order lunch.
Slightly, and it matters far less than you think. Native speakers are extremely good at reconstructing intended meaning from broken input — they do it with children and with each other daily. Being understood while sounding clumsy is a far better position than being silent while sounding correct.
Only enough to read an explanation. Knowing the words subject, object, tense and gender will let you use a reference book. Beyond that, terminology is a subject in its own right and learning it is not learning the language.
Learn the article with the noun from the very beginning — that is a vocabulary habit, not a grammar lesson, and it costs nothing at the time. Then leave the case tables until you have several hundred words, at which point they explain things you have already seen instead of describing things you have not.
Children learning a first language get vocabulary and grammar together from immersion, which is not available to most adult learners. Adults have a real advantage in being able to be told a rule and apply it — but that advantage only pays off once there is vocabulary for the rule to operate on.
You never stop entirely, but the returns drop sharply after the main tenses and basic sentence structure. Past that point, additional grammar study buys you accuracy and nuance, while additional vocabulary buys you comprehension. Comprehension is worth more for longer.
The rest of the beginner questions, answered the same way.