The Short Answer: Praise or Completion?
Use compliment with an i when you mean praise or admiration: “I complimented Maya on her presentation.” Use complement with an e when something completes, enhances, or works well with something else: “The illustrations complement Maya’s presentation.” One tiny vowel separates a kind remark from a perfect pairing.
That is the basic difference. If you remember only one thing, make it this:
- Compliment = praise
- Complement = complete
Simple, right? Mostly. But these two words are especially sneaky because they look similar, sound alike in everyday speech, and can both serve as nouns or verbs. Let’s separate them once and for all.
What Does “Compliment” Mean?
A compliment is an expression of praise, admiration, approval, or respect. When used as a verb, to compliment means to give someone that praise.
“Compliment” as a noun
- “Your speech was excellent” is a compliment.
- Priya received several compliments on her new glasses.
- The reviewer paid the chef a generous compliment.
Notice the common phrase pay someone a compliment. No money changes hands—unless you compliment a particularly expensive haircut and decide you suddenly need one too.
“Compliment” as a verb
- I complimented Priya on her glasses.
- The manager complimented the team on its quick response.
- He compliments everyone’s dog, which is an excellent way to make friends.
A useful sentence pattern is:
compliment + someone + on + something
For example: “She complimented me on my writing.”
The MLA Style Center’s guide to these commonly confused words offers the same straightforward distinction: compliment belongs to the world of praise and admiration.
What Does “Complement” Mean?
A complement is something that completes, improves, balances, or works especially well with something else. As a verb, to complement means to complete or enhance.
“Complement” as a noun
- The lemon sauce is a perfect complement to the fish.
- Her practical experience was a useful complement to his technical knowledge.
- The ship sailed with a full complement of crew members.
That final example uses a slightly different sense. A full complement is the complete number or quantity required. A committee with all ten of its members present has its full complement—even if three of them are secretly checking email.
“Complement” as a verb
- The blue curtains complement the gray walls.
- His attention to detail complements her creative thinking.
- The side salad complements the main course.
In each case, two things work together to create a stronger or more complete whole. One does not praise the other. The curtains are not leaning across the room and whispering, “Gray really suits you.”
As Merriam-Webster’s explanation of complement and compliment notes, the meanings of complement are connected to completion.
A Side-by-Side Comparison
| Word | Basic meaning | Noun example | Verb example | |---|---|---|---| | Compliment | Praise or admiration | She gave me a compliment. | She complimented my work. | | Complement | Something that completes or enhances | The scarf is a perfect complement to the coat. | The scarf complements the coat. |
Here is the difference in one miniature scene:
Liam complimented Ava on her jacket because its color complemented her shoes.
Liam offered praise. The jacket and shoes formed a pleasing combination. Two similar-looking words, two separate jobs.
This kind of precision matters because the wrong vowel can change your meaning. For more on choosing exact language, explore how the right word can make your writing clearer and stronger.
The Memory Trick That Usually Works
The easiest trick is hidden inside complement:
complement → complete
Both words contain an e in the important spot, and both concern completion.
For compliment, connect the i with:
- I admire you.
- I like your jacket.
- I have something nice to say.
You could also remember this tiny formula:
I give compliments. E completes.
It is not great poetry, but it gets the job done.
When you are uncertain, ask yourself one question:
Is someone expressing praise?
- If yes, choose compliment.
- If no, ask whether one thing completes, balances, or enhances another. If it does, choose complement.
Don’t Forget “Complimentary” and “Complementary”
The confusion does not stop with the original pair. Their adjective forms—complimentary and complementary—also have different meanings.
Complimentary
Complimentary can mean praising or favorable:
- The critic wrote a complimentary review.
- Her supervisor was highly complimentary about her work.
It can also mean provided free of charge as a courtesy:
- The hotel offers complimentary breakfast.
- Guests received complimentary tickets.
- The restaurant brought us a complimentary dessert.
Why does a word associated with praise also mean “free”? Think of the traditional expression with our compliments, meaning something is offered as a gesture of courtesy. Merriam-Webster lists both “expressing praise” and “given free as a courtesy or favor” among the meanings of complimentary.
Complementary
Complementary describes things that complete, balance, or improve one another:
- The two researchers have complementary skills.
- Blue and orange are complementary colors in traditional color theory.
- The main course and wine have complementary flavors.
A hotel’s breakfast may be complimentary, meaning free. Its coffee and pastries may be complementary, meaning they work nicely together. If both are true, congratulations: you have found the rare complimentary and complementary breakfast.
“Complement” Has a Grammar Meaning Too
In grammar, a complement is a word, phrase, or clause that completes the meaning of part of a sentence. It often follows a linking verb and supplies essential information about the subject or object.
Consider:
The soup tastes delicious.
The word delicious completes the idea introduced by “The soup tastes.” Without it, the sentence feels unfinished: “The soup tastes…” Tastes like what?
Another example:
The committee elected Rosa chairperson.
Here, chairperson provides information about Rosa and completes the meaning of the construction. Grammatical terminology can vary in detail, but the central idea remains completion. The MLA Style Center’s overview of grammatical complements includes examples of complements made from individual words, phrases, and clauses.
Complements help sentences feel complete. Modifiers, meanwhile, add description—and occasionally wander away from the words they are supposed to describe. If you enjoy grammar’s more mischievous side, take a look at what happens when modifiers start dangling.
Common Mistakes to Watch For
These errors often appear because the writer is thinking of a related idea rather than the word’s exact meaning.
Mistake 1: Using “compliment” for a good match
Incorrect: The red wine compliments the pasta.
Correct: The red wine complements the pasta.
The wine improves or completes the meal. It does not praise the pasta’s excellent sauce coverage.
Mistake 2: Using “complement” for praise
Incorrect: My boss gave me a complement.
Correct: My boss gave me a compliment.
Your boss expressed approval rather than completing you like the final piece of a jigsaw puzzle.
Mistake 3: Advertising a “complementary” service
Incorrect: Enjoy our complementary Wi-Fi.
Correct: Enjoy our complimentary Wi-Fi.
If the Wi-Fi is free, it is complimentary. If it somehow enhances the hotel’s swimming pool, perhaps it is complementary—but that would require a very unusual pool.
Mistake 4: Assuming spellcheck will save you
Both spellings are legitimate English words, so ordinary spellcheck may not flag the wrong one. Proofreading must consider meaning, not spelling alone. This is especially important in emails, advertisements, menus, and posts where common grammar mistakes can easily slip onto social media.
Test Yourself
Choose compliment or complement in each sentence.
- The bright cushions the dark sofa.
- Elena paid Marcus a thoughtful .
- The musicians’ different styles each other beautifully.
- The hotel gave us a bottle of water.
- The team now has its full of twelve players.
- I must you on your patience.
Answers
- complement
- compliment
- complement
- complimentary
- complement
- compliment
If you got all six, accept our compliments. Your understanding now complements your excellent taste in grammar articles.
The Final Word
The difference comes down to praise versus completion:
- A compliment says something nice.
- A complement makes something complete or better.
- Complimentary means praising or free.
- Complementary means working well together.
When doubt strikes, look for the e in complete and complement. That one-letter connection can prevent an awkward email, rescue a restaurant menu, and ensure that your words say exactly what you mean.