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Complementary vs Complimentary: What's the Difference?

C1 Advanced

What's the Difference?

Complementary" means things that complete each other, while "complimentary" is used to describe something that is free of charge or given as praise.

Memory Tip: complementary = completes, complimentary = free or flattery

complementary has /plem/, complimentary has /plim/ sound

complementary /ˌkɒmplɪˈmentəri/

adjective
Complementary refers to things that combine in such a way as to enhance or emphasize the qualities of each other.
Example:
The complementary nature of the two disciplines becomes evident when we see how psychology and neuroscience work together to provide a more comprehensive understanding of human behavior.
Common patterns:
complementary skills complementary colors complementary roles
complementary →

complimentary /ˌkɒmplɪˈmentəri/

adjective
Given free of charge or as a courtesy.
Example:
The hotel offered a complimentary breakfast to all its guests, which was a pleasant surprise that added value to their stay.
Common patterns:
complimentary ticket complimentary remarks complimentary service
complimentary →

Common Mistakes

The hotel offered complementary breakfast every morning.
The hotel offered complimentary breakfast every morning.
The breakfast is provided free of charge, so 'complimentary' is correct.
The two artists have complimentary styles that enhance each other's work.
The two artists have complementary styles that enhance each other's work.
The styles complete or enhance each other, so 'complementary' is correct.

Quick Practice

0/2 correct
1. The ____ nature of the two disciplines becomes evident when we see how psychology and neuroscience work together to provide a more comprehensive understanding of human behavior.
2. The hotel offered a ____ breakfast to all its guests, which was a pleasant surprise that added value to their stay.

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