What “C1 vocabulary” actually means
Three things, and only one of them is knowing more words.
- Breadth — you can discuss unfamiliar and abstract subjects, not just everyday ones.
- Precision — a significant drawback rather than a big problem. This is the one that separates bands.
- Register control — knowing which of two synonyms belongs in a proposal and which belongs in a conversation.
The Language descriptor at C1 credits range used with precision. An unusual word deployed slightly wrongly reads as a gap in control, not as ambition — so accuracy at range beats range alone, every time.
Topic banks: abstract, not everyday
B2 topics are concrete — travel, work, food, technology in daily life. C1 topics ask you to argue about the same areas at one remove.
Ethics and society
accountability, vested interest, social cohesion, a moral obligation, at the expense of, disproportionately affected, unintended consequences, the greater good
Globalisation and economics
economic disparity, cultural homogenisation, a shift towards, outsourcing, interdependence, market forces, to level the playing field
Technology and its impact
automation, data privacy, digital literacy, to render obsolete, an over-reliance on, surveillance, the pace of change
The environment
sustainability, finite resources, carbon footprint, to mitigate, irreversible damage, conservation efforts, at a tipping point
The arts and culture
critical acclaim, derivative, thought-provoking, to resonate with, mainstream appeal, artistic merit, a body of work
The collocations that carry an argument
These matter more than the topic banks, because they work on any subject. They are the connective tissue of a C1 essay and of a Part 4 speaking answer.
| Function | Phrases |
|---|---|
| Making a distinction | draw a distinction between · it is worth distinguishing · a far cry from |
| Citing support | a growing body of evidence · a case in point · by all accounts |
| Conceding | admittedly · there is some truth in · up to a point · that said |
| Weighing | on balance · the overriding consideration · outweighed by |
| Hedging | arguably · tends to suggest · in most circumstances · not necessarily |
| Consequence | give rise to · at the expense of · with the result that |
Idiomatic phrasal verbs worth the effort
Most “C1 phrasal verb lists” online are B2 lists with more entries. The ones genuinely worth separate study are the low-transparency ones — where knowing both words tells you nothing about the meaning. A dozen of those beats a hundred you can already work out.
| Phrasal verb | Meaning | In use |
|---|---|---|
| bear out | confirm, support | The data bears out his claim. |
| gloss over | avoid dealing with properly | The report glosses over the cost. |
| wear thin | become less tolerable with repetition | That excuse is wearing thin. |
| talk down to | patronise | The campaign talks down to its audience. |
| fall through | fail to happen | The agreement fell through. |
| hold out for | wait for something better | They held out for a better offer. |
| put down to | attribute to | She put it down to inexperience. |
| water down | weaken deliberately | The proposals were watered down. |
| gear up for | prepare for | The sector is gearing up for change. |
| single out | select for special treatment | One region was singled out. |
| brush aside | dismiss without consideration | He brushed the objection aside. |
| stem from | originate in | The problem stems from poor planning. |
Each of those would be marked down as an error if used slightly wrongly, so learn them with a full example sentence rather than a gloss. The exam glossary covers the terminology the tasks themselves use, which is a different vocabulary again.
Actually retaining any of this
Reading a list once does nothing. Three habits do most of the work:
- Spaced review. Short, frequent revisits beat long sessions. Ten minutes daily outperforms an hour on Sunday, because what you are building is recall speed.
- Personalisation. Write each phrase into a sentence that is true about you. Attached to something real, it survives exam pressure; attached to a textbook example, it often does not.
- Production, not recognition. You will recognise all of these long before you can produce any of them. Force three new phrases into every piece of writing you do until they stop feeling deliberate.
Practising it
The paper that tests vocabulary hardest is Reading & Use of English Part 1, where all four options usually mean roughly the same thing and the answer is decided by collocation. Part 1 practice explains every answer, which is where the learning is — note what the correct word was attached to, not what it meant.
See also C1 grammar topics for the structures this vocabulary sits inside, the C1 study plan for how much time to give it, and the C1 Advanced exam preparation guide.