Compliment vs Complement: How to Choose

Opening Thoughts

One swapped vowel separates compliment from complement — the i versus the e in the middle of the word. That single letter swings the whole meaning. A compliment is something you say to make someone feel good. A complement is something that fits, finishes, or heightens something else. Each word acts as both a noun and a verb, which is a big part of why the pair keeps tripping people up.

The distinction earns its keep in careful writing. A restaurant menu that says a wine "complements" a dish promises it will bring out the flavor. A menu that says a wine "compliments" the dish accidentally claims the bottle is flattering the plate. Tiny letter, big difference in meaning — and the correct choice signals an attentive writer.

This dictionary.wiki guide covers both words in depth, including their adjective cousins (complimentary and complementary), the errors they invite, and the memory hooks that actually stick.

Compliment, Defined

Compliment works as a noun and as a verb. The noun names the kind words themselves; the verb names the act of offering them.

Used as a Noun

1. Words of praise or admiration: "The chef received a string of compliments on the tasting menu."
2. A courteous greeting or gesture of regard: "Send my compliments to the conductor."

Used as a Verb

1. To offer praise: "Her manager complimented her on the quarterly report."
2. To acknowledge someone's achievement: "Let me compliment you on pulling that project across the finish line."

Word Origin

Compliment came into English through French, which had taken it from Italian complimento, which traces back to Spanish cumplimiento — the idea of fulfilling social courtesy. The word sits in the same family as comply, and it carries an older sense of meeting the expectations of polite exchange.

Related Forms

• Compliments (plural noun / third-person verb): "Her compliments are always specific." / "He compliments good work whenever he sees it."
• Complimented: "The editor complimented my lead paragraph."
• Complimenting: "Stop complimenting my parking — I'm not that proud of it."
• Complimentary (adjective): either "praising" or "offered at no charge."

Complement, Defined

Complement also doubles as noun and verb. The noun names the thing that finishes or rounds out another; the verb names the act of bringing that completion about.

Used as a Noun

1. Something that completes: "A sharp cheddar is the ideal complement to a crisp apple."
2. A full count or quantity: "The ferry left harbor with a full complement of 150 passengers."
3. A grammar term: "In 'She became mayor,' the noun mayor acts as a subject complement."
4. A math or science term: "The complement of a 40-degree angle is 50 degrees."

Used as a Verb

1. To round out or enhance: "A citrus glaze complements the roast duck."
2. To fit together smoothly: "Their writing styles complement each other on every collaboration."

Word Origin

Complement descends from Latin complementum, "that which fills out" or "completes," rooted in the verb complere, "to fill up." The Latin stem plere ("to fill") also lives inside complete, replete, and deplete.

Related Forms

• Complements: "The roasted garlic complements the creamy soup."
• Complemented: "Her data chops complemented his storytelling instincts."
• Complementing: "The brass fixtures are complementing the midcentury furniture nicely."
• Complementary (adjective): "The two teams bring complementary strengths to the project."

The Two Words at a Glance

Sample Sentences in Action

Compliment

• "Thank you for the generous compliment on my photography."
• "Dominic complimented her pastries and asked where she'd studied."
• "The coach paid the goalie a compliment after the shutout."
• "I'd like to compliment the engineering team for shipping ahead of schedule."
• "Her compliments tend to land because she mentions specifics."

Complement

• "Silver hoop earrings are a lovely complement to that sweater."
• "A peppery arugula salad complements grilled steak beautifully."
• "His patience complements her urgency, which is why they make a good partnership."
• "The cabin came with a full complement of kitchen tools."
• "Deep green accents complement the warm oak flooring."

Both Words in a Single Sentence

• "She complimented the florist on choosing blooms that complement the table linens."
• "Let me compliment you on picking a pocket square that genuinely complements your jacket."

Complimentary vs Complementary

The adjective cousins generate their own share of confusion, partly because both show up in very familiar settings.

Complimentary (with "i")

1. Full of praise: "The early reviews were overwhelmingly complimentary."
2. Offered at no cost: "Guests receive a complimentary breakfast in the lobby."

The "free of charge" meaning grew out of the older sense of courtesy — something given as a gesture of goodwill, a compliment to the customer.

Complementary (with "e")

1. Completing or enhancing each other: "The two studies offer complementary angles on the same problem."
2. In math and science: "Complementary angles add up to 90 degrees."
3. Complementary colors: pairs placed opposite each other on the color wheel that produce vivid contrast.
4. Complementary medicine: approaches used alongside conventional treatment.

A classic slip is writing "complimentary colors" when what you actually mean is colors that enhance each other. Paint swatches can't praise anything. They complete each other, so the right adjective is complementary.

Slips Writers Make

Slip 1: "The Wine Compliments the Dish"

Wrong: "This Syrah compliments the lamb nicely."
Right: "This Syrah complements the lamb nicely."

The wine isn't delivering flattery — it's rounding out the flavor.

Slip 2: "She Complemented His Tie"

Wrong: "She complemented him on his new tie."
Right: "She complimented him on his new tie."

She was praising the tie, not finishing it. For another trouble pair worth studying, see affect vs effect.

Ways to Remember the Difference

The "I" Says "I Like You"

Compliment contains an i. When you hand someone a compliment, you're really saying "I think something about you is great." Let the i stand for the personal, praising side of the word.

The "E" Echoes "complEte"

Complement shares its e with complete. Anything that complements something else is completing it — same letter, same idea.

The Quick Context Check

• Is somebody saying something kind? → compliment
• Are two things combining well? → complement

Closing Takeaways

Remember the vowels and you have the pair beaten. Compliment (with i) is praise — "I like you." Complement (with e) is completion — think of the shared e with complete. The same logic carries over to the adjectives: complimentary is praising or no-cost, while complementary is finishing or enhancing.

For more word guides, visit dictionary.wiki and explore English grammar basics and commonly misspelled words.