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View synonyms for

complementary

[kom-pluh-men-tuh-ree, -tree]

adjective

  1. forming a complement; completing.

  2. complementing each other.



noun

plural

complementaries 
  1. complementary color.

complementary

/ ˌkɒmplɪˈmɛntərɪ, -trɪ /

adjective

  1. acting as or forming a complement; completing

  2. forming a satisfactory or balanced whole

  3. forming a mathematical complement

    sine and cosine are complementary functions

  4. maths logic (of a pair of sets, etc) mutually exclusive and exhaustive, each being the complement of the other

  5. (of genes) producing an effect in association with other genes

  6. involving or using the treatments and techniques of complementary medicine

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Other Word Forms

  • complementariness noun
  • uncomplementary adjective
  • ˌdzˈԳٲ adverb
  • ˌdzˈԳٲԱ noun
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Word History and Origins

Origin of complementary1

First recorded in 1590–1600; complement + -ary
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Example Sentences

Examples have not been reviewed.

Without complementary requirements for hardening the homes themselves, widespread clearing of landscaping immediately around homes could do little to reduce risk and could even aggravate the danger.

From

The two economies are complementary as most trade is for products produced in both countries, said Emilio Cadena, CEO of Prodensa and chairman of the board of the U.S.-Mexico Foundation.

From

Camil’s perspective is among a comparatively vast and diverse chorus of American and Vietnamese voices comprising “Turning Point: The Vietnam War” — some famous, many ordinary, most complementary and others contradictory.

From

All the companies stressed they were committed to providing nutritious products for babies, and that their products were intended as a complementary part of a child's varied weaning diet.

From

He wrote that she displayed "the man-eating weed of Humanistic Mercy" that was "enabled by the feminist denial of the complementary design and callings of men and women."

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When To Use

’s the difference between complementary and complimentary?

Complementary is an adjective used to describe something that complements something else—goes along with it and serves to make it better or complete it (as in complementary colors). Complimentary is an adjective that can describe something intended to be a compliment—a comment that expresses praise or admiration of someone (as in a complimentary remark). It can also be used to mean that something is given for free, as in I hope we get complimentary snacks on this flight.Since the primary senses of both words are generally used in positive contexts, it can be easy to confuse them.The easiest way to remember the difference is that complementary often involves something that completes something else, and complete also starts with c-o-m-p-l-e. On the other hand, you can remember that complimentary is spelled with an i because compliments are something that I like to get (and give). Nice shirt, by the way.Here’s an example of complementary and complimentary used correctly in the same sentence.Example: Sometimes, when the chef overhears complimentary feedback about a dish, she sends out a complimentary bottle of wine—one that’s complementary to the rest of the meal, of course.Want to learn more? Read about the difference between compliment and complement.

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complementarity principlecomplementary angle