C1adjective3K

Instrumental

UK /["/ˌɪnstrəˈmentl/"]/US /["/ˌɪnstrəˈmentl/"]/

Definition

important in making something happen

In simple words: Related to tools or methods used to do something.

Examples

The Conservation Trust performs an instrumental role in the protection of rural environments.
He was instrumental in bringing about an end to the conflict.
They were highly instrumental in bringing the business to Newtown.
instrumental music
The songs are largely instrumental.
the instrumental case

Usage notes

Use 'instrumental' when talking about something that helps achieve a result. It’s appropriate in both academic and casual contexts, but might sound a bit formal in everyday conversation.

Grammar pattern

instrumental + in/for + noun

Memory hint

Think of 'instrument' helping you play music — it's crucial to the performance.

Collocations

be
prove
become
highly
very
essentially
in
be
largely
mostly
entirely

Synonyms

essential
critical
helpful
conducive
beneficial

Antonyms

unimportant
insignificant
ineffective

Common mistakes

'Instrumental' misused as 'instrument' in context.
Confusing it with 'instumentalize', which is less common.
Using it in non-causal contexts (e.g., saying 'instrumental' when something is simply 'useful').