Similes Use Like or As Right: The Complete Guide to Perfect Comparisons

⏱ Reading time: 8 min read

Similes are one of the most accessible and powerful tools in your writing arsenal, and they always use “like” or “as” to draw vivid comparisons between unlike things. The examples below will show you exactly how both structures work in real sentences, so you can choose the right one for your context and start using them immediately in your own writing.

What Is a Simile?

A simile is a figure of speech that directly compares two different things using the words “like” or “as” to highlight a shared quality. According to Simile, this rhetorical device has been used since ancient literature to make descriptions more vivid and relatable. The key difference between a simile and a metaphor is that a simile explicitly signals the comparison with “like” or “as,” while a metaphor states that one thing is another without those connecting words.

Similes Using “Like” for Direct Comparison

When you use “like” in a simile, you’re creating a straightforward comparison that feels conversational and immediate. This structure works particularly well in dialogue, informal writing, and moments when you want your comparison to land quickly without sounding overly formal.

• “She sings like an angel.” — “When she performs, she sings like an angel.” (admiring, reverent)
• “He runs like the wind.” — “Watch him sprint; he runs like the wind.” (energetic, fast-paced) — This one has survived centuries because the rhythm of “runs like the wind” mirrors the speed it describes.
• “My brain works like a computer.” — “Give me a second; my brain works like a computer.” (analytical, modern)
• “They fought like cats and dogs.” — “The siblings fought like cats and dogs over the last cookie.” (chaotic, familiar) — I tell my students this is overused; find fresher animal comparisons.
• “Time flies like an arrow.” — “Don’t waste a moment; time flies like an arrow.” (philosophical, urgent)
• “She sleeps like a baby.” — “After the long hike, she sleeps like a baby.” (peaceful, restful)
• “He eats like a horse.” — “Watch out at the buffet; he eats like a horse.” (humorous, hearty appetite)
• “The room smelled like fresh bread.” — “Walking in, the room smelled like fresh bread.” (comforting, sensory)

Similes Using “As” for Equal Comparison

The “as…as” structure creates a sense of equality between the two things being compared, often emphasizing intensity or degree. This construction tends to sound slightly more formal and literary than “like” similes, making it perfect for essays, poetry, and descriptive prose where you want to create a measured, deliberate effect.

• “As brave as a lion.” — “She walked into the interview as brave as a lion.” (confident, admiring)
• “As cold as ice.” — “His rejection was as cold as ice.” (harsh, unfeeling) — The hard ‘c’ sounds in “cold” and “ice” reinforce the chill emotionally and sonically.
• “As busy as a bee.” — “She’s been as busy as a bee preparing for the event.” (industrious, active)
• “As clear as crystal.” — “His instructions were as clear as crystal.” (understandable, transparent)
• “As fit as a fiddle.” — “At eighty, he’s still as fit as a fiddle.” (healthy, vigorous)
• “As quick as lightning.” — “Her response was as quick as lightning.” (fast, immediate)
• “As solid as a rock.” — “You can depend on him; he’s as solid as a rock.” (reliable, steadfast)
• “As white as snow.” — “After the scare, her face was as white as snow.” (pale, frightened)

When to Use “Like” Versus “As” Correctly

Understanding when to choose “like” versus “as” isn’t just about personal preference—there are grammatical rules and stylistic considerations that make one work better than the other in specific contexts. According to Right, correctness in language often depends on established convention and clarity of meaning.

• “Like a pro.” — “She handled the crisis like a pro.” (skilled, professional) — This is the version my students always reach for first because it’s versatile and works in almost any context.
• “As smooth as silk.” — “The negotiation went as smooth as silk.” (effortless, seamless)
• “Like water off a duck’s back.” — “Criticism rolls off him like water off a duck’s back.” (unaffected, resilient)
• “As light as a feather.” — “The suitcase was as light as a feather.” (weightless, easy)
• “Like a fish out of water.” — “At the formal dinner, he felt like a fish out of water.” (uncomfortable, out of place)
• “As hard as nails.” — “The boss is as hard as nails when it comes to deadlines.” (tough, uncompromising)
• “Like two peas in a pod.” — “The twins dress like two peas in a pod.” (similar, identical)
• “As steady as she goes.” — “Keep the boat as steady as she goes.” (stable, consistent)

Common Mistakes and Clichés to Avoid

Not all similes are created equal, and some have been used so frequently they’ve lost their impact. As a writing instructor who’s read thousands of student essays, I can tell you which ones to skip and which fresh alternatives will make your writing stand out.

• “As dead as a doornail.” — “The battery is as dead as a doornail.” (completely nonfunctional) — Dickens made this famous, but it’s exhausted; try “as dead as last year’s leaves” instead.
• “Like there’s no tomorrow.” — “She’s spending money like there’s no tomorrow.” (reckless, urgent) — This is lazy writing; specify what “no tomorrow” actually means in your context.
• “As old as the hills.” — “That joke is as old as the hills.” (ancient, outdated) — Vague and tired; compare to something specific to your subject instead.
• “Like a ton of bricks.” — “The news hit him like a ton of bricks.” (sudden, devastating) — The weight metaphor works, but “like a collapsed ceiling” feels more original.
• “As easy as pie.” — “The test was as easy as pie.” (simple, effortless) — Unless you’re writing for children, skip this; “as easy as breathing” has better rhythm.
• “Like watching paint dry.” — “The lecture was like watching paint dry.” (boring, tedious) — Everyone uses this; try “like counting dust motes” for the same effect with freshness.
• “As blind as a bat.” — “He’s as blind as a bat without his glasses.” (poor vision) — Biologically inaccurate (bats aren’t blind) and overused; find a better animal comparison.

Powerful Similes for Emotional Writing

When you’re writing about feelings, the right simile can make an abstract emotion concrete and relatable. These examples work particularly well in personal essays, fiction, and any writing where you need to help readers feel what you’re describing.

• “Like a weight lifted off my shoulders.” — “After the apology, it felt like a weight lifted off my shoulders.” (relieved, unburdened) — The physical sensation of relief is universal, making this instantly understandable.
• “As hollow as an empty house.” — “After she left, the apartment felt as hollow as an empty house.” (lonely, desolate)
• “Like sunshine after rain.” — “Her smile was like sunshine after rain.” (hopeful, warming)
• “As tangled as old headphones.” — “My thoughts were as tangled as old headphones.” (confused, messy) — This modern comparison resonates because everyone has experienced that specific frustration.
• “Like a punch to the gut.” — “The rejection felt like a punch to the gut.” (shocking, painful)
• “As warm as a blanket fresh from the dryer.” — “His voice was as warm as a blanket fresh from the dryer.” (comforting, cozy)
• “Like standing on the edge of a cliff.” — “Starting over felt like standing on the edge of a cliff.” (terrifying, uncertain)
• “As fragile as a soap bubble.” — “Their peace was as fragile as a soap bubble.” (delicate, temporary)

How to Write Your Own Simile Using Like or As

Creating effective similes is a skill you can develop with practice, and the process is simpler than you might think. Here’s my three-step method that I teach in every workshop:

Step 1: Identify the quality you want to emphasize (speed, sadness, brightness, etc.).

Step 2: Brainstorm objects, animals, or phenomena that share that quality—push past the first three ideas that come to mind because those are usually clichés.

Step 3: Connect them with “like” or “as,” choosing “like” for conversational tone and “as…as” for more formal or emphatic comparisons.

Worked Example: Let’s say you want to describe exhaustion. The obvious simile is “tired like a dog” or “as tired as a dog,” but that’s worn out. Push further: what else is completely drained? A phone battery at 1%, a deflated balloon, a wrung-out sponge. “She was as drained as a wrung-out sponge” gives readers a physical image they can feel.

Frequently Asked Questions

Do all similes use “like” or “as”?

Yes, by definition, similes must use “like” or “as” to make the comparison explicit. If you’re comparing two things without those words (saying one thing is another), you’re writing a metaphor, not a simile.

Which is better: similes with “like” or similes with “as”?

Neither is inherently better—they serve different purposes. “Like” similes tend to sound more casual and conversational, making them perfect for dialogue and informal writing. “As…as” similes often feel more formal and emphatic, working well in essays, poetry, and descriptive passages where you want to create a measured, deliberate effect.

Can I use “as” without repeating it (like “as brave a lion”)?

Yes, you can use variations like “as brave a lion as I’ve ever seen,” though the standard simile structure is “as [adjective] as [noun].” The key is maintaining clarity—readers should immediately recognize you’re making a comparison.

Why do some similes sound wrong even when they follow the rules?

A simile can be grammatically correct but still fail if the comparison doesn’t make sense, if it’s too abstract, or if it’s so overused it’s lost meaning. The best similes create an instant, vivid image that illuminates something about the subject. If your simile requires explanation or feels forced, revise it.