in key

Idioms  

1. In harmony with other factors, in a matching style, as in This furniture is perfectly in key with the overall design. This term uses key in the musical sense, that is, “a scheme of notes related to one another.” The antonym, out of key, means “not in harmony with other factors,” or “unsuitable,” as in He is out of key with his time. [c. 1900]

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Example Sentences

He also wants his staff around him, his own people in key roles.

From BBC • May 13, 2026

Although it is not a vaccine, the vitamin K shot has been swept up in the same post-pandemic tide that has led to a drop in key childhood vaccines, including for measles and whooping cough.

From Salon • May 7, 2026

The second is the maturation of Chinese alternatives in key technologies—certain chips, AI agents, batteries —which has lowered the perceived cost of cutting Western counterparties out.

From The Wall Street Journal • May 5, 2026

German sportswear giant Adidas on Wednesday reported strong growth in quarterly profits as sales rose in key markets, but warned of a "very volatile" and highly competitive retail environment.

From Barron's • Apr. 29, 2026

The statements made by Department witnesses seeking appropriations were not in accord with those contained in key publications of the Agriculture Department.

From "Silent Spring" by Rachel Carson