IELTS language bank: Academic Word List Overview

The Academic Word List, usually shortened to the AWL, is a set of 570 word families compiled by researcher Averil Coxhead from a large corpus of academic writing spanning arts, commerce, law, and science. It deliberately excludes the 2,000 most common general-English words, since those are assumed already known, and instead lists the words that turn up constantly across academic writing on almost any subject, regardless of the specific field — words like "analyse," "significant," "context," "consistent," and "factor" appear about as often in an essay on economics as one on biology or law, precisely because they're doing structural, argumentative work rather than naming subject-specific content. For IELTS specifically, the AWL matters because Task 2 essays and Academic Reading passages both draw heavily on exactly this kind of general academic vocabulary, so a working command of it pays off across the whole test rather than only on one topic.

A "word family" in the AWL's own terms is broader than a single word — it groups a base form together with its common derived forms, so the family for "analyse" also covers "analysis," "analyst," "analytical," and "analytically." This matters practically: memorising "significant" as an adjective without also being able to produce "significance" (noun) and "significantly" (adverb) leaves you unable to use the word correctly whenever a sentence's grammar calls for a different form, which happens constantly in genuine writing. A large share of the errors candidates make with AWL vocabulary aren't about not knowing the word at all — they're about knowing only one form of a word family and forcing it into a sentence that grammatically needs a different one, producing something like "this factor significant affects the outcome" instead of "this factor significantly affects the outcome."

The list is organised into ten sublists, ranked by how frequently each word family appears across the source corpus — Sublist 1 contains the most frequent word families, Sublist 10 the least. This ranking is the single most useful piece of strategic information the AWL provides, because it means the 60 words in Sublist 1 alone (words like "analyse," "approach," "area," "assess," "concept," "context," "data," "environment," "establish," "factor") give you disproportionately more coverage of actual academic text than an equivalent 60 words picked at random from later in the list. Working systematically through the sublists in order — genuinely learning Sublist 1 before moving to Sublist 2, rather than skimming the whole list at once — is a far more efficient use of limited study time than trying to absorb all 570 word families with equal attention from the start.

Frequency ranking also explains why the AWL is worth treating differently from topic vocabulary, such as the environment or technology word lists elsewhere in this bank. Topic vocabulary only pays off if your specific exam prompt happens to be about that topic; AWL vocabulary pays off regardless of the prompt, because "factor," "significant," "context," and "consistent" are exactly as usable in an essay about crime as one about education. This is precisely why a strong AWL command tends to correlate with more consistent Lexical Resource scores across different Task 2 topics than topic-specific vocabulary alone can provide — it's the vocabulary doing the underlying argumentative and analytical work of the essay, not the vocabulary naming what the essay happens to be about.