Repeat your key terms

A lot of writing teachers online tell you to avoid repetition and use elegant variation instead — reach for a synonym so you don't say the same word twice. It sounds sophisticated. It is one of the surest ways to make a reader lose the thread, because now the same idea wears three different names and the reader can't tell whether you're discussing one thing or three.

How it works

Coherence is built through key terms. Decide what your piece is actually about — three to five concepts that matter to your reader — and use the same words for them from start to finish. When "customer," "client," and "user" all point at the same person, pick one and keep it. Repetition here isn't a failure of style; it's the thread the reader follows through the whole piece. Most professional writing fails because it tries to be about too many things at once; naming and repeating a small set of terms is how you make it about one.

Two levels of resolution

Consistent topics don't only help sentence by sentence — they tell the reader what the whole passage is about. Reading runs on two "skis" at once: one tracks what each sentence is about (its topic, which readers take to be whatever comes first), and the other tracks what the larger unit — paragraph, section, chapter — is about. Vary your topics for the sake of variety, as many teachers advise, and each sentence may be clear while the passage dissolves: is this about language, biology, or children? Repeat the key term in the topic position across a run of sentences and the reader can see, globally, what it all adds up to. Pinker's own paragraph on language reads as one thing precisely because "language" keeps returning to the front.

Why it matters

Readers hold a piece together by tracking a few recurring words. Swap those words for synonyms and you break the track — the writing feels scattered, and even a reader who finishes can't summarise what you said. It's the difference between a scene with one clear protagonist and a stage so crowded with characters that the audience can follow every line but not the point.

Try it

1. Name the three to five key terms your piece turns on. If you can't, it's about too many things.
2. Search the draft for synonyms of each and collapse them back to one chosen word.
3. Seed those terms early and repeat them at each turn, so the reader can trace them beginning to end.

Common pitfalls

Confusing key-term repetition with clumsy word-echo. You still vary the throwaway words; what you hold constant are the load-bearing concepts. The other pitfall is choosing too many terms — five is a thread, fifteen is a knot.

I've seen a lot of writing teachers online tell writers to avoid repetition and use variation. The problem is that variation confuses readers.

WILLIAM · 7 FIRST-DRAFT MISTAKES · 2025

Elegant variation is how you make one idea look like three.

Drawn from

• William, 7 First-Draft Mistakes I Fix All the Time (Writer Science, 2025).
• William, Four Writing Hacks to Make Your Words Stick: Lessons from Reader Psychology (Writer Science, 2025) — the two skis; repeating the topic shows what the passage is about.
• Joseph M. Williams, Style: Lessons in Clarity and Grace — cohesion, coherence, and thematic strings.
• Related: Chain old information to new, Open every unit with its point.