instrumental
🇺🇸
/ˌɪnstrəˈmentl/
🇬🇧
/ˌɪnstrəˈmentl/
very important in making something happen
Her help was instrumental in finishing the project on time.
made by or for musical instruments
The instrumental music played softly in the background.
the form of a word that shows it is used as a tool
In some languages, nouns have an instrumental case.
a piece of music with no singing
The band played an instrumental during the break.