adjective

instrumental

instrumental, influential, pivotal

She was instrumental in our success.

She was instrumental in our success.

I enjoy listening to instrumental music.

I enjoy listening to instrumental music.

to be ((instrumental)) in (sth.) She was instrumental in our success.

((instrumental)) music I enjoy listening to instrumental music.

Synonyms: crucial, vital, key, essential

Derived from 'instrument' with the adjectival suffix '-al'.

Someone who is 'instrumental' is like a key 'instrument' or tool needed to achieve something.

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