complementary

/ˌkɑːmpləˈmɛntəri/

Say it: kom-pluh-MEN-tuh-ree

1. adjective Combining in a way that enhances, improves, or completes each other.
Their different skills were complementary, making them a highly effective team.
2. adjective In geometry, referring to two angles whose sum is 90 degrees.
A 30-degree angle and a 60-degree angle are complementary.
3. adjective Relating to a system of medicine used alongside conventional treatments.
She practices several forms of complementary therapy, including acupuncture and massage.

📖 Seen in the wild

The two artists had complementary styles that worked well together.
collected by @vocablast

✏️ complementary in a sentence

The sweet flavor of the figs was a complementary contrast to the salty prosciutto.
In economics, printers and ink cartridges are classic examples of complementary goods.
The report's qualitative analysis provides a complementary perspective to the hard quantitative data.
Her calm demeanor and his energetic personality are complementary, making them a balanced couple.
The two software systems are designed to be complementary, sharing data seamlessly.
In genetics, the two strands of a DNA molecule are complementary to each other.

🔁 Synonyms & antonyms

matching corresponding reciprocal compatible harmonious interdependent correlative

matching · suggests two things that go well together, often in appearance or style.

corresponding · implies a parallel relationship or a direct connection between two things.

reciprocal · emphasizes a mutual, two-way action or relationship.

compatible · focuses on the ability to coexist or work together without conflict.

Opposites: contradictory, conflicting, incompatible, dissimilar

🌱 Where it comes from

The word traces back to the Latin 'complementum', meaning 'that which fills up or completes', from the verb 'complere', to fill up. This origin is a great reminder of its core meaning: it's not about praise, but about making something whole or perfect.

🧩 How it's used

Common patterns:

complementary skillscomplementary colorscomplementary rolescomplementary medicinemutually complementary

The most common error is confusing 'complementary' with 'complimentary'. Remember that 'complementary' (with an 'e') is about completing something, like how a full complement of sailors completes a crew. 'Complimentary' (with an 'i') is about praise (a compliment) or being free of charge. Think 'e' for 'enhance' and 'i' for 'I praise you' or 'I get it free'.

Word family: complement, complementation

💬 Quick answers

What does complementary mean?

It describes two or more different things that improve or complete one another when they are combined.

What is the difference between complementary and complimentary?

Complementary (with an 'e') means completing or pairing well together. Complimentary (with an 'i') means expressing praise or being given for free.

What are complementary colors?

They are pairs of colors opposite each other on the color wheel, like red and green. When placed next to each other, they create strong, vibrant contrast.

Can people have complementary personalities?

Yes, this is a common use of the word. It means their different personality traits balance each other out, often making for a strong relationship.

1 word nerd collected it V

Want "complementary" to actually stick?

Save it to your own vault, let AI explain it, practice till it's yours.

Start for free →