Short answer: write a metaphor in four moves. Name the abstract thing you are struggling to describe. Borrow a concrete thing your reader can see, hear or touch that behaves the same way. State the swap directly, with no "like" and no "as." Then apply the test most guides skip: read the sentence with the metaphor removed, and if the sentence says the same thing without it, the metaphor was decoration. A metaphor that does work carries information the plain sentence cannot, and it does it in fewer words.
What a metaphor is, in one line
A metaphor says one thing is another. "Time is a thief" is a metaphor; "time is like a thief" is a simile. The word itself describes the operation. The Online Etymology Dictionary's entry for metaphor, read October 2, 2026, traces it through French and Latin to Greek metaphora, "a transfer," from meta ("over, across") and pherein ("to carry"): literally a carrying over, the transfer of a word's sense from one thing to another.
The oldest surviving definition is Aristotle's, in the Poetics, given here in the S. H. Butcher translation hosted by MIT's Internet Classics Archive: "Metaphor is the application of an alien name by transference either from genus to species, or from species to genus, or from species to species, or by analogy." The useful word is alien. The name has to come from outside the thing it is applied to, or no transfer has happened.
Register and region: metaphor works in every register and in all varieties of English. Business and technical writing uses it constantly, usually without noticing.
Step 1: name the abstract thing precisely
Metaphor is a trade: you give up an abstraction and get back something concrete. So the first job is to know exactly which abstraction you are trading.
"Her career" is too broad. "The part of her career where the work was going well but nobody had noticed yet" is specific enough to find an image for. Writers who cannot find a metaphor are usually not short of imagination; they are trying to describe five things at once, and no single image covers five things.
Write the abstraction as a sentence first, in flat language, with no figures of speech in it. Then underline the one quality that matters most: its speed, its weight, its direction, how it ends. That underlined quality is what your concrete thing has to share. Everything else about the image is free, and will quietly add meaning you did not plan, which is where metaphors get their power.
Step 2: borrow something concrete that behaves the same way
Now look for a physical thing with that quality. The reliable sources are bodies, weather, water, buildings, animals, machines, money and journeys, because every reader has handled them.
A short method that works at a desk: write the quality at the top of a page and list fifteen physical things that have it, as fast as you can, without judging any of them. The first five will be clichés, because clichés are the most available answers. The useful ones usually appear between ten and fifteen, after the obvious stock has run out.
| Abstraction | Quality to carry | Weak image | Image that does work |
|---|---|---|---|
| A long illness | wears you down slowly | "a battle" | "a tax she paid every morning before anything else" |
| An argument that never resolves | keeps returning in the same shape | "a nightmare" | "a tide that came back on schedule" |
| Grief in the second year | present but no longer visible | "a hole" | "weather, not an event" |
| A bureaucracy | absorbs effort, returns nothing | "a maze" | "a sponge with a budget" |
The weak column is not wrong, it is used up. "A battle," "a nightmare," "a hole" and "a maze" are the four most available images in English for those four ideas, which means they arrive carrying nothing. The right-hand column is our own illustration of what the same sentence can do when the image is chosen for one specific quality.
Step 3: state the swap, and keep one image per sentence
A metaphor is strongest stated flatly, as fact: not "it was as if the bureaucracy absorbed effort like a sponge," but "the department was a sponge with a budget." The hedging words in the first version tell the reader you do not quite believe your own image.
The one-image rule follows from this. Once you have claimed that A is B, every verb and adjective in the neighborhood belongs to B. A sponge soaks, squeezes and dries out. It does not sail, bloom or detonate. Mixing sources is the single most common failure, and it is easy to hear once you listen for it: "this bottleneck is the cornerstone of a vicious circle we need to unpack" puts four unrelated images in eleven words, so the sentence produces no picture at all.
Extending one image, by contrast, is a technique rather than a fault. If the department is a sponge, the next sentence can mention what it has absorbed and what comes out when it is squeezed. The image earns more each time it is used, as long as it stays one image.
Step 4: cut it if the sentence survives without it
Delete the metaphor and read the line again. If the meaning is unchanged and the sentence is shorter, the metaphor was ornament and should go. If something is now missing, that missing thing is the metaphor's job and it stays.
Two other tests catch most of the rest.
- The direction test. The image must be at least as strong as the subject. "The layoff was a paper cut" shrinks the subject. Comparing down is only right when you intend sarcasm.
- The print test. George Orwell's first rule in Politics and the English Language (1946, read on the Orwell Foundation's site October 2, 2026) is "Never use a metaphor, simile or other figure of speech which you are used to seeing in print." The same essay describes "a huge dump of worn-out metaphors which have lost all evocative power" and lists examples including "toe the line," "ride roughshod over," "Achilles' heel" and "swan song."
Orwell's point is about attention rather than originality for its own sake. A phrase you have read a hundred times passes through the reader without producing an image, so it occupies the space where a working metaphor would have been.
Where worn-out metaphors come from, and how to spot one
Most of the dead stock in English was once a live image attached to a real object. "Pull out all the stops" is a pipe organ instruction before it is a figure of speech, which our page on the origin of pull out all the stops documents. "Break the ice" was a literal operation on a trade route long before it meant easing a social silence, as our page on the break the ice origin shows. The metaphor did not fail; it succeeded so completely that the image stopped being visible.
That history gives you a practical test. Ask what the phrase's literal picture is. If you cannot see it without being told, the phrase is functioning as a plain word and is fine in ordinary prose, but it will not do the work you want a fresh metaphor to do. If you can see it, check that it does not collide with the next image in the sentence.
A ten-minute rewrite exercise
- Take a paragraph of your own writing that contains an abstraction you are not happy with.
- Underline every figure of speech already in it. Count how many separate sources they come from.
- Delete all of them. Rewrite the paragraph in flat language, with no images at all. This version is your control.
- Pick the one sentence in the flat version that most needs help. List fifteen concrete things that share its key quality.
- Write the metaphor from item eleven or later on your list.
- Read the paragraph with and without it. Keep the metaphor only if the version without it is worse.
Most paragraphs end up with one metaphor where they started with four. That is the usual result and it is the right one.
Common mistakes
- The explained metaphor. "The department was a sponge, absorbing effort and giving nothing back." The second clause tells the reader what the first clause already showed. Keep one.
- The mixed source. Two images from different worlds in one sentence. Fix by choosing the stronger and rewriting the rest in plain language.
- The borrowed cliché. If it arrived instantly, it arrived from print.
- The oversized claim. An image far bigger than the subject ("a bloodbath" for a difficult meeting) reads as a joke, whether or not you meant one.
- The garbled fixed phrase. Writers often reach for an existing idiom and produce a near miss instead; our page on commonly misused idioms lists the errors readers recognize instantly.
- The unexamined origin. Before building on a fixed phrase, check what it actually means and where it came from. Our explainer on where idioms come from covers how a reference traces one.
Frequently asked questions
What is the difference between writing a metaphor and writing a simile?
A simile announces the comparison with "like" or "as" and keeps the two things separate. A metaphor states the identity outright and merges them. The construction method is the same; the metaphor commits harder, which makes it stronger and less forgiving of a weak image.
How do I write a metaphor that is not a cliché?
Keep listing past the first five candidates. Clichés are simply the most available images for a given idea, so they arrive first. Drawing the image from a specific person's world, their job, place and era, also helps, because few other writers have that person.
Can one metaphor run through a whole piece of writing?
Yes. That is an extended metaphor, and it is a strength as long as every detail belongs to the same image. The risk is not length, it is drift into a second source.
How many metaphors should a page have?
Fewer than you think. One strong image per section usually does more than several competing ones, and a page with a metaphor in every paragraph asks the reader to build a new picture every few seconds.
Is it a problem that business writing is full of metaphors?
Only when they pile up. Terms like "pipeline," "bandwidth" and "runway" are useful shorthand on their own, but three in one sentence stop producing pictures and start producing noise.