I edit and proofread books all the time, and honestly—these mistakes pop up everywhere. They’re small, subtle, and irritatingly persistent. But once you see them clearly explained, they’re easy to fix (or avoid in the first place).
Here’s a comprehensive, no-nonsense guide for the most common slip-ups authors make, along with straightforward rules to help you nail them down once and for all.
1. Engrained vs. Ingrained
- Correct: Ingrained
- Incorrect: Engrained (this is almost always a mistake).
- Explanation: “Ingrained” means deeply embedded or established. (“Habits are deeply ingrained.”)
2. Benefitting vs. Benefiting
- Correct (American English): Benefiting
- Correct (British English): Benefitting
- Explanation: American English typically uses a single “t,” British English usually doubles it. (“She is benefiting from the new job.”)
3. Effect vs. Affect
- Effect is usually a noun (“cause and effect”). Occasionally a verb meaning “to bring about” (“to effect change”).
- Affect is usually a verb meaning “to influence” (“The weather affects my mood”).
4. Its vs. It’s
- Its = possession (“The cat licked its paws.”)
- It’s = contraction of “it is” or “it has” (“It’s raining again.”)
5. Flyer vs. Flier
- Flyers and brochures: Flyer (“I handed out flyers.”)
- Someone who flies: Flier (“Frequent flyer miles.”)
5. Setup vs. Set up
- Setup = noun (“That’s a nice setup you’ve got here.”)
- Set up = verb (“Let’s set up the table.”)
6. Apart vs. A part
- Apart = separate (“Keep the twins apart.”)
- A part = part of something (“I want to be a part of the project.”)
7. Gray vs. Grey
- Gray is American spelling.
- Grey is British spelling. (Both correct, just choose one consistently.)
7. Compliment vs. Complement
- Compliment = saying something nice (“She gave me a compliment.”)
- Complement = something that completes or enhances (“These colors complement each other.”)
8. Principal vs. Principle
- Principal = main or most important (or a person: “The principal runs the school.”)
- Principle = belief or rule (“Stick to your principles.”)
9. Than vs. Then
- Than = comparison (“I’m taller than you.”)
- Then = sequence or time (“We ate dinner, then went home.”)
9. Peek vs. Peak vs. Pique
- Peek = quick glance
- Peak = highest point
- Pique = stimulate interest (“That piqued my curiosity.”)
10. Lose vs. Loose
- Lose = misplace (“Don’t lose your keys.”)
- Loose = not tight (“My shoelaces are loose.”)
11. Breathe vs. Breath
- Breathe = verb (“I need to breathe deeply.”)
- Breath = noun (“Take a deep breath.”)
12. Stationary vs. Stationery
- Stationary = still, unmoving
- Stationery = paper supplies (remember: “e” for envelopes)
11. Compliment vs. Complement (again, because it’s so common)
- Compliment: praise or admiration.
- Complement: enhance or complete something.
12. Advise vs. Advice
- Advise (verb): “I advise you to stop.”
- Advice: noun, guidance (“I need some advice.”)
13. Alright vs. All Right
- Correct: All right
- Incorrect (mostly): Alright or alright (technically informal, best avoided)
13. Discrete vs. Discreet
- Discrete = separate, distinct (“Discrete units.”)
- Discreet = careful, subtle (“Be discreet.”)
14. Elicit vs. Illicit
- Elicit = draw out (“Elicit responses.”)
- Illicit = illegal (“Illicit activities.”)
15. Stationary vs. Stationery
- Stationary = still (“The car was stationary.”)
- Stationery = writing paper, office supplies.
16. No one vs. Noone
- Correct: No one (two words)
- Incorrect: Noone
15. Proceed vs. Precede
- Proceed = continue (“Please proceed.”)
- Precede = come before (“Chapter one precedes chapter two.”)
16. Farther vs. Further
- Farther = physical distance (“Farther down the road.”)
- Further = metaphorical or additional (“Further your career.”)
17. Cite vs. Site vs. Sight
- Cite = quote or reference.
- Site = location.
- Sight = vision.
17. Stationary vs. Stationary (again, because people mix these a lot)
- Stationary: not moving
- Stationery: paper products (letters, envelopes)
17. Lay vs. Lie
- Lay = to place something down (“Lay the book down.”)
- Lie = recline (“Lie down.”)
18. Insure vs. Ensure
- Insure = insurance (“Insure your car.”)
- Ensure = make sure (“Ensure you’re ready.”)
18. Allude vs. Elude
- Allude = hint (“She alluded to a secret.”)
- Elude = escape or avoid (“The criminal eluded capture.”)
18. Accept vs. Except
- Accept = receive or agree to (“Accept an offer.”)
- Except = exclude (“Everyone except Tom.”)
19. Weather vs. Whether
- Weather = climate
- Whether = expressing doubt or choice (“Whether or not.”)
20. Desert vs. Dessert
- Desert = dry landscape or to abandon (“Deserted island.”)
- Dessert = sweet food (“Chocolate cake for dessert.”)
Quick Bonus Section: Hard-to-Spell Words (Simplified!)
These aren’t grammar errors, but they’re misspelled constantly, so here are easy ways to remember them:
- Definitely (Not “Definately”): Think “finite” within.
- Necessary: “one Collar, two Sleeves” (one C, two S’s).
- Embarrass: “two R’s, two S’s” (like how embarrassing!)
- Separate: There’s “a rat” in “sepaRATe.”
- Occurrence: Remember “occur” (two Cs, two Rs).
Final Thought (Because We Always Need One)
Look, nobody remembers all this stuff all the time—that’s why editing exists. But knowing these common mistakes means you’ll spot them faster. And catching them before readers do means fewer bad reviews, fewer credibility-killers, and more engaged readers who stay immersed in your story instead of tripping over tiny mistakes.
Grammar and spelling might feel boring, sure. But getting them right? It makes you look professional. It makes your story smoother, clearer, easier to read. And in the end, that’s the real goal: letting readers get lost in you
